diff options
Diffstat (limited to 'gson')
16 files changed, 1421 insertions, 8 deletions
diff --git a/gson/src/main/java/org/onap/policy/common/gson/JacksonMethodAdapterFactory.java b/gson/src/main/java/org/onap/policy/common/gson/JacksonMethodAdapterFactory.java new file mode 100644 index 00000000..1c3039f7 --- /dev/null +++ b/gson/src/main/java/org/onap/policy/common/gson/JacksonMethodAdapterFactory.java @@ -0,0 +1,202 @@ +/* + * ============LICENSE_START======================================================= + * ONAP + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.common.gson; + +import com.google.gson.Gson; +import com.google.gson.JsonElement; +import com.google.gson.JsonObject; +import com.google.gson.TypeAdapter; +import com.google.gson.TypeAdapterFactory; +import com.google.gson.reflect.TypeToken; +import com.google.gson.stream.JsonReader; +import com.google.gson.stream.JsonWriter; +import java.io.IOException; +import java.lang.reflect.Method; +import java.util.ArrayList; +import java.util.HashSet; +import java.util.List; +import java.util.Set; +import org.onap.policy.common.gson.internal.AnyGetterSerializer; +import org.onap.policy.common.gson.internal.AnySetterDeserializer; +import org.onap.policy.common.gson.internal.ClassWalker; +import org.onap.policy.common.gson.internal.Deserializer; +import org.onap.policy.common.gson.internal.MethodDeserializer; +import org.onap.policy.common.gson.internal.MethodSerializer; +import org.onap.policy.common.gson.internal.Serializer; + +/** + * Factory that serializes/deserializes class methods following the normal behavior of + * jackson. Supports the following annotations: + * <ul> + * <li>GsonJsonIgnore</li> + * <li>GsonJsonProperty</li> + * <li>GsonJsonAnyGetter</li> + * <li>GsonJsonAnySetter</li> + * </ul> + */ +public class JacksonMethodAdapterFactory implements TypeAdapterFactory { + + @Override + public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) { + Class<? super T> clazz = type.getRawType(); + + if (!JacksonExclusionStrategy.isManaged(clazz)) { + return null; + } + + ClassWalker data = new ClassWalker(); + data.walkClassHierarchy(clazz); + + if (data.getInProps(Method.class).isEmpty() && data.getOutProps(Method.class).isEmpty()) { + if (data.getAnyGetter() == null && data.getAnySetter() == null) { + // no methods to serialize + return null; + } + } + + return new JacksonMethodAdapter<>(gson, data, gson.getDelegateAdapter(this, type)); + } + + /** + * Adapter for a single class. + * + * @param <T> type of class on which the adapter works + */ + private static class JacksonMethodAdapter<T> extends TypeAdapter<T> { + + /** + * Used to create an object of the given class. + */ + private final TypeAdapter<T> delegate; + + /** + * Used to serialize/deserialize a JsonElement. + */ + private final TypeAdapter<JsonElement> elementAdapter; + + /** + * Serializers for each item within the object. + */ + private final Serializer[] serializers; + + /** + * Deserializers for each item within the object. + */ + private final Deserializer[] deserializers; + + /** + * Constructs the object. + * + * @param gson the associated gson object + * @param data data used to configure the adapter + * @param delegate default constructor for the type + */ + public JacksonMethodAdapter(Gson gson, ClassWalker data, TypeAdapter<T> delegate) { + this.delegate = delegate; + + this.elementAdapter = gson.getAdapter(JsonElement.class); + + Set<String> unliftedProps = new HashSet<>(); + unliftedProps.addAll(data.getInNotIgnored()); + unliftedProps.addAll(data.getOutNotIgnored()); + + // create serializers + this.serializers = makeSerializers(gson, data, unliftedProps).toArray(new Serializer[0]); + + // create deserializers + this.deserializers = makeDeserializers(gson, data, unliftedProps).toArray(new Deserializer[0]); + } + + /** + * Creates a complete list of serializers. + * + * @param gson the associated gson object + * @param data data used to configure the serializers + * @param unliftedProps properties that should not be lowered by "any-getters" + * @return a list of all serializers + */ + private List<Serializer> makeSerializers(Gson gson, ClassWalker data, Set<String> unliftedProps) { + List<Serializer> ser = new ArrayList<Serializer>(); + + if (data.getAnyGetter() != null) { + ser.add(new AnyGetterSerializer(gson, unliftedProps, data.getAnyGetter())); + } + + data.getOutProps(Method.class).forEach(method -> ser.add(new MethodSerializer(gson, method))); + + return ser; + } + + /** + * Creates a complete list of deserializers. + * + * @param gson the associated gson object + * @param data data used to configure the deserializers + * @param unliftedProps properties that should not be lifted by "any-setters" + * @return a list of all deserializers + */ + private List<Deserializer> makeDeserializers(Gson gson, ClassWalker data, Set<String> unliftedProps) { + List<Deserializer> deser = new ArrayList<Deserializer>(); + + if (data.getAnySetter() != null) { + deser.add(new AnySetterDeserializer(gson, unliftedProps, data.getAnySetter())); + } + + data.getInProps(Method.class).forEach(method -> deser.add(new MethodDeserializer(gson, method))); + + return deser; + } + + @Override + public void write(JsonWriter out, T value) throws IOException { + JsonElement tree = delegate.toJsonTree(value); + + if (tree.isJsonObject()) { + JsonObject jsonObj = tree.getAsJsonObject(); + + // serialize each item from the value into the target tree + for (Serializer serializer : serializers) { + serializer.addToTree(value, jsonObj); + } + } + + elementAdapter.write(out, tree); + } + + @Override + public T read(JsonReader in) throws IOException { + JsonElement tree = elementAdapter.read(in); + + T object = delegate.fromJsonTree(tree); + + if (tree.isJsonObject()) { + JsonObject jsonObj = tree.getAsJsonObject(); + + // deserialize each item from the tree into the target object + for (Deserializer dser : deserializers) { + dser.getFromTree(jsonObj, object); + } + } + + return object; + } + } +} diff --git a/gson/src/main/java/org/onap/policy/common/gson/internal/Adapter.java b/gson/src/main/java/org/onap/policy/common/gson/internal/Adapter.java index b4ef53f7..bb8672bb 100644 --- a/gson/src/main/java/org/onap/policy/common/gson/internal/Adapter.java +++ b/gson/src/main/java/org/onap/policy/common/gson/internal/Adapter.java @@ -86,12 +86,11 @@ public class Adapter { * * @param gson Gson object providing type adapters * @param accessor method used to access the item from within an object - * @param forGetter {@code true} if the name is for a "getter" method, {@code false} - * if for a "setter" * @param valueType the class of value on which this operates */ - public Adapter(Gson gson, Method accessor, boolean forGetter, Type valueType) { - this.propName = (forGetter ? detmGetterPropName(accessor) : detmSetterPropName(accessor)); + public Adapter(Gson gson, Method accessor, Type valueType) { + boolean forSetter = (accessor.getReturnType() == void.class); + this.propName = (forSetter ? detmSetterPropName(accessor) : detmGetterPropName(accessor)); this.reader = new ConvInfo(TypeToken.get(valueType)); this.gson = gson; this.fullName = getQualifiedName(accessor); diff --git a/gson/src/main/java/org/onap/policy/common/gson/internal/AnyGetterSerializer.java b/gson/src/main/java/org/onap/policy/common/gson/internal/AnyGetterSerializer.java new file mode 100644 index 00000000..da9ad173 --- /dev/null +++ b/gson/src/main/java/org/onap/policy/common/gson/internal/AnyGetterSerializer.java @@ -0,0 +1,83 @@ +/* + * ============LICENSE_START======================================================= + * ONAP + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.common.gson.internal; + +import com.google.gson.Gson; +import com.google.gson.JsonElement; +import com.google.gson.JsonObject; +import com.google.gson.JsonParseException; +import java.lang.reflect.Method; +import java.util.Map.Entry; +import java.util.Set; + +/** + * Serializer for methods having a JsonAnyGetter annotation. + */ +public class AnyGetterSerializer extends Lifter implements Serializer { + + public static final String NOT_AN_OBJECT_ERR = "expecting a JsonObject for "; + + /** + * Constructs the object. + * + * @param gson Gson object providing type adapters + * @param propName property name associated with the lifted field + * @param unliftedProps property names that should not be lifted + * @param getter method used to get the item from within an object + */ + public AnyGetterSerializer(Gson gson, Set<String> unliftedProps, Method getter) { + super(gson, unliftedProps, getter, getter.getGenericReturnType()); + } + + @Override + public void addToTree(Object source, JsonObject target) { + // get the value from the object + Object value = invoke(source); + if (value == null) { + // nothing to lift + return; + } + + JsonElement inner = toJsonTree(value); + if (!inner.isJsonObject()) { + throw new JsonParseException(makeError(NOT_AN_OBJECT_ERR)); + } + + // lift items from inner into the target + copyLiftedItems(inner.getAsJsonObject(), target); + } + + /** + * Copies lifted items from one tree into another, without removing them from the + * source tree. + * + * @param source tree from which items are to be copied + * @param target tree into which items are to be copied + */ + private void copyLiftedItems(JsonObject source, JsonObject target) { + for (Entry<String, JsonElement> ent : source.entrySet()) { + String name = ent.getKey(); + if (shouldLift(name)) { + target.add(name, ent.getValue()); + } + } + } +} diff --git a/gson/src/main/java/org/onap/policy/common/gson/internal/AnySetterDeserializer.java b/gson/src/main/java/org/onap/policy/common/gson/internal/AnySetterDeserializer.java new file mode 100644 index 00000000..85d42dfa --- /dev/null +++ b/gson/src/main/java/org/onap/policy/common/gson/internal/AnySetterDeserializer.java @@ -0,0 +1,58 @@ +/* + * ============LICENSE_START======================================================= + * ONAP + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.common.gson.internal; + +import com.google.gson.Gson; +import com.google.gson.JsonElement; +import com.google.gson.JsonObject; +import java.lang.reflect.Method; +import java.util.Map.Entry; +import java.util.Set; + +/** + * De-serializer for methods having a JsonAnySetter annotation. + */ +public class AnySetterDeserializer extends Lifter implements Deserializer { + + /** + * Constructs the object. + * + * @param gson Gson object providing type adapters + * @param unliftedProps property names that should not be lifted + * @param getter method used to get the item from within an object + */ + public AnySetterDeserializer(Gson gson, Set<String> unliftedProps, Method setter) { + super(gson, unliftedProps, setter, setter.getGenericParameterTypes()[1]); + } + + @Override + public void getFromTree(JsonObject source, Object target) { + for (Entry<String, JsonElement> ent : source.entrySet()) { + String name = ent.getKey(); + + if (shouldLift(name)) { + Object value = fromJsonTree(ent.getValue()); + invoke(target, name, value); + } + } + } + +} diff --git a/gson/src/main/java/org/onap/policy/common/gson/internal/Lifter.java b/gson/src/main/java/org/onap/policy/common/gson/internal/Lifter.java new file mode 100644 index 00000000..bb8ec321 --- /dev/null +++ b/gson/src/main/java/org/onap/policy/common/gson/internal/Lifter.java @@ -0,0 +1,62 @@ +/* + * ============LICENSE_START======================================================= + * ONAP + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.common.gson.internal; + +import com.google.gson.Gson; +import java.lang.reflect.Method; +import java.lang.reflect.Type; +import java.util.Set; + +/** + * Super class of serializers and de-serializers that deal with "lifted" data, that is, + * data that is lifted from a nested json object into the containing object. + */ +public class Lifter extends MethodAdapter { + + /** + * Names of the properties that are <i>not</i> to be lifted. + */ + private final Set<String> unliftedProps; + + /** + * Constructs the object. + * + * @param gson Gson object providing type adapters + * @param unliftedProps property names that should not be lifted + * @param accessor method used to access the item from within an object + * @param type the class of value on which this operates + */ + public Lifter(Gson gson, Set<String> unliftedProps, Method accessor, Type type) { + super(gson, accessor, type); + + this.unliftedProps = unliftedProps; + } + + /** + * Determines if a property should be lifted. + * + * @param propName the name of the property + * @return {@code true} if the property should be lifted, {@code false} otherwise + */ + public boolean shouldLift(String propName) { + return !unliftedProps.contains(propName); + } +} diff --git a/gson/src/main/java/org/onap/policy/common/gson/internal/MethodAdapter.java b/gson/src/main/java/org/onap/policy/common/gson/internal/MethodAdapter.java new file mode 100644 index 00000000..579864da --- /dev/null +++ b/gson/src/main/java/org/onap/policy/common/gson/internal/MethodAdapter.java @@ -0,0 +1,69 @@ +/* + * ============LICENSE_START======================================================= + * ONAP + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.common.gson.internal; + +import com.google.gson.Gson; +import com.google.gson.JsonParseException; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.lang.reflect.Type; + +/** + * Super class of adapters used to serialize and de-serialize a method. + */ +public class MethodAdapter extends Adapter { + + public static final String INVOKE_ERR = "cannot invoke method to serialize/deserialize: "; + + /** + * Method used to access the item within an object. + */ + private final Method accessor; + + /** + * Constructs the object. + * + * @param gson Gson object providing type adapters + * @param accessor method used to access the item from within an object + * @param type the class of value on which this operates + */ + public MethodAdapter(Gson gson, Method accessor, Type type) { + super(gson, accessor, type); + + this.accessor = accessor; + } + + /** + * Invokes the accessor method. + * + * @param self object on which to invoke the method + * @param args arguments to be passed to the method + * @return the method's result + */ + public Object invoke(Object self, Object... args) { + try { + return accessor.invoke(self, args); + + } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) { + throw new JsonParseException(makeError(INVOKE_ERR), e); + } + } +} diff --git a/gson/src/main/java/org/onap/policy/common/gson/internal/MethodDeserializer.java b/gson/src/main/java/org/onap/policy/common/gson/internal/MethodDeserializer.java new file mode 100644 index 00000000..bb0724eb --- /dev/null +++ b/gson/src/main/java/org/onap/policy/common/gson/internal/MethodDeserializer.java @@ -0,0 +1,53 @@ +/* + * ============LICENSE_START======================================================= + * ONAP + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.common.gson.internal; + +import com.google.gson.Gson; +import com.google.gson.JsonElement; +import com.google.gson.JsonObject; +import java.lang.reflect.Method; + +/** + * De-serializer for methods that are exposed. + */ +public class MethodDeserializer extends MethodAdapter implements Deserializer { + + /** + * Constructs the object. + * + * @param gson Gson object providing type adapters + * @param setter method used to set the item within an object + */ + public MethodDeserializer(Gson gson, Method setter) { + super(gson, setter, setter.getGenericParameterTypes()[0]); + } + + @Override + public void getFromTree(JsonObject source, Object target) { + JsonElement jsonEl = source.get(getPropName()); + if (jsonEl == null || jsonEl.isJsonNull()) { + return; + } + + invoke(target, fromJsonTree(jsonEl)); + } + +} diff --git a/gson/src/main/java/org/onap/policy/common/gson/internal/MethodSerializer.java b/gson/src/main/java/org/onap/policy/common/gson/internal/MethodSerializer.java new file mode 100644 index 00000000..ab544614 --- /dev/null +++ b/gson/src/main/java/org/onap/policy/common/gson/internal/MethodSerializer.java @@ -0,0 +1,47 @@ +/* + * ============LICENSE_START======================================================= + * ONAP + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.common.gson.internal; + +import com.google.gson.Gson; +import com.google.gson.JsonObject; +import java.lang.reflect.Method; + +/** + * Serializer for methods that are exposed. + */ +public class MethodSerializer extends MethodAdapter implements Serializer { + + /** + * Constructs the object. + * + * @param gson Gson object providing type adapters + * @param getter method used to get the item from within an object + */ + public MethodSerializer(Gson gson, Method getter) { + super(gson, getter, getter.getGenericReturnType()); + } + + @Override + public void addToTree(Object source, JsonObject target) { + Object value = invoke(source); + target.add(getPropName(), (value == null ? null : toJsonTree(value))); + } +} diff --git a/gson/src/test/java/org/onap/policy/common/gson/JacksonMethodAdapterFactoryTest.java b/gson/src/test/java/org/onap/policy/common/gson/JacksonMethodAdapterFactoryTest.java new file mode 100644 index 00000000..47cf4b3b --- /dev/null +++ b/gson/src/test/java/org/onap/policy/common/gson/JacksonMethodAdapterFactoryTest.java @@ -0,0 +1,311 @@ +/* + * ============LICENSE_START======================================================= + * ONAP + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.common.gson; + +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertFalse; +import static org.junit.Assert.assertNotNull; +import static org.junit.Assert.assertNull; +import static org.junit.Assert.assertTrue; + +import com.google.gson.Gson; +import com.google.gson.GsonBuilder; +import com.google.gson.JsonElement; +import com.google.gson.reflect.TypeToken; +import java.util.Map; +import java.util.TreeMap; +import org.junit.Test; +import org.onap.policy.common.gson.JacksonExclusionStrategy; +import org.onap.policy.common.gson.JacksonMethodAdapterFactory; +import org.onap.policy.common.gson.annotation.GsonJsonAnyGetter; +import org.onap.policy.common.gson.annotation.GsonJsonAnySetter; +import org.onap.policy.common.gson.annotation.GsonJsonIgnore; +import org.onap.policy.common.gson.annotation.GsonJsonProperty; + +public class JacksonMethodAdapterFactoryTest { + + private static JacksonMethodAdapterFactory factory = new JacksonMethodAdapterFactory(); + + private static Gson gson = new GsonBuilder().setExclusionStrategies(new JacksonExclusionStrategy()) + .registerTypeAdapterFactory(factory).create(); + + @Test + public void testCreate() { + // unhandled types + assertNull(factory.create(gson, TypeToken.get(JsonElement.class))); + assertNull(factory.create(gson, TypeToken.get(NothingToSerialize.class))); + + assertNotNull(factory.create(gson, TypeToken.get(Data.class))); + assertNotNull(factory.create(gson, TypeToken.get(Derived.class))); + assertNotNull(factory.create(gson, TypeToken.get(OnlyGetters.class))); + assertNotNull(factory.create(gson, TypeToken.get(OnlySetters.class))); + assertNotNull(factory.create(gson, TypeToken.get(OnlyAnyGetter.class))); + assertNotNull(factory.create(gson, TypeToken.get(OnlyAnySetter.class))); + + // unhandled type + + Data data = new Data(); + data.id = 10; + data.text = "some text"; + + String result = gson.toJson(data); + Data data2 = gson.fromJson(result, Data.class); + assertEquals(data.toString(), data2.toString()); + + Derived der = new Derived(); + der.setId(20); + der.setText("hello"); + der.text = "world"; + der.map = new TreeMap<>(); + der.map.put("mapA", "valA"); + der.map.put("mapB", "valB"); + + result = gson.toJson(der); + + // should not contain the unserialized fields + assertFalse(result.contains("hello")); + assertFalse(result.contains("world")); + + // null out unserialized fields + der.text = null; + + // null out overridden field + der.setText(null); + + Derived der2 = gson.fromJson(result, Derived.class); + + assertEquals(der.toString(), der2.toString()); + + // override of AnyGetter + AnyGetterOverride dblget = new AnyGetterOverride(); + dblget.setMap(der.map); + dblget.overMap = new TreeMap<>(); + dblget.overMap.put("getA", 100); + dblget.overMap.put("getB", 110); + + String result2 = gson.toJson(dblget); + dblget.overMap.keySet().forEach(key -> assertTrue("over contains " + key, result2.contains(key))); + der.map.keySet().forEach(key -> assertFalse("sub contains " + key, result2.contains(key))); + + // override of AnySetter + Map<String, Integer> map = new TreeMap<>(); + map.put("setA", 200); + map.put("setB", 210); + AnySetterOverride dblset = gson.fromJson(gson.toJson(map), AnySetterOverride.class); + assertEquals(map.toString(), dblset.overMap.toString()); + assertNull(dblset.getTheMap()); + + // non-static nested class - can serialize, but not de-serialize + Container cont = new Container(500, "bye bye"); + result = gson.toJson(cont); + assertEquals("{'id':500,'nested':{'value':'bye bye'}}".replace('\'', '"'), result); + } + + protected static class Data { + private int id; + private String text; + + public int getId() { + return id; + } + + public void setId(int id) { + this.id = id; + } + + // not public, but property provided + @GsonJsonProperty("text") + protected String getText() { + return text; + } + + public void setText(String text) { + this.text = text; + } + + public void unused(String text) { + // do nothing + } + + @Override + public String toString() { + return "Data [id=" + id + ", text=" + text + "]"; + } + } + + protected static class Derived extends Data { + + // overrides private field from Data + public String text; + + private Map<String, String> map; + + @GsonJsonAnyGetter + public Map<String, String> getTheMap() { + return map; + } + + @GsonJsonIgnore + public void setMap(Map<String, String> map) { + this.map = map; + } + + @GsonJsonAnySetter + public void setMapValue(String key, String value) { + if (map == null) { + map = new TreeMap<>(); + } + + map.put(key, value); + } + + @Override + public String toString() { + return "Derived [text=" + text + ", map=" + map + ", toString()=" + super.toString() + "]"; + } + } + + /** + * Has {@link GsonJsonAnyGetter} method that overrides the super class' method. + */ + private static class AnyGetterOverride extends Derived { + private Map<String, Integer> overMap; + + @GsonJsonAnyGetter + private Map<String, Integer> getOverride() { + return overMap; + } + } + + /** + * Has {@link GsonJsonAnySetter} method that overrides the super class' method. + */ + private static class AnySetterOverride extends Derived { + private Map<String, Integer> overMap; + + @GsonJsonAnySetter + private void setOverride(String key, int value) { + if (overMap == null) { + overMap = new TreeMap<>(); + } + + overMap.put(key, value); + } + } + + /** + * Has nothing to serialize. + */ + protected static class NothingToSerialize { + // not serialized + protected String unserialized; + } + + /** + * Only has getters. + */ + protected static class OnlyGetters { + public int getId() { + return 1010; + } + } + + /** + * Only has setters. + */ + protected static class OnlySetters { + public void setId(int id) { + // do nothing + } + } + + /** + * Only has {@link GsonJsonAnyGetter}. + */ + private static class OnlyAnyGetter { + @GsonJsonAnyGetter + public Map<String, Integer> getOverride() { + return null; + } + } + + /** + * Only has {@link GsonJsonAnySetter}. + */ + private static class OnlyAnySetter { + @GsonJsonAnySetter + public void setOverride(String key, int value) { + // do nothing + } + } + + /** + * Used to test serialization of non-static nested classes. + */ + protected static class Container { + private int id; + private Nested nested; + + public Container() { + super(); + } + + public Container(int id, String value) { + this.id = id; + this.nested = new Nested(value); + } + + public int getId() { + return id; + } + + public void setId(int id) { + this.id = id; + } + + public Nested getNested() { + return nested; + } + + @Override + public String toString() { + return "Container [id=" + id + ", nested=" + nested + "]"; + } + + + protected class Nested { + private String value; + + public Nested(String val) { + value = val; + } + + public String getValue() { + return value; + } + + @Override + public String toString() { + return "Nested [value=" + value + "]"; + } + } + } +} diff --git a/gson/src/test/java/org/onap/policy/common/gson/internal/AdapterTest.java b/gson/src/test/java/org/onap/policy/common/gson/internal/AdapterTest.java index fcb0d9ad..04f37164 100644 --- a/gson/src/test/java/org/onap/policy/common/gson/internal/AdapterTest.java +++ b/gson/src/test/java/org/onap/policy/common/gson/internal/AdapterTest.java @@ -140,7 +140,7 @@ public class AdapterTest { Method getter = mget("getMyList"); - Adapter aget = new Adapter(gson, getter, true, getter.getReturnType()); + Adapter aget = new Adapter(gson, getter, getter.getReturnType()); dataAdapter.reset(); JsonElement tree = aget.toJsonTree(listField); @@ -148,7 +148,7 @@ public class AdapterTest { assertEquals(DataAdapterFactory.ENCODED_LIST, tree.toString()); Method setter = AdapterTest.class.getDeclaredMethod("setMyList", List.class); - Adapter aset = new Adapter(gson, setter, true, setter.getGenericParameterTypes()[0]); + Adapter aset = new Adapter(gson, setter, setter.getGenericParameterTypes()[0]); dataAdapter.reset(); @SuppressWarnings("unchecked") @@ -168,7 +168,7 @@ public class AdapterTest { // test getter - adapter = new Adapter(gson, mget(GET_VALUE_NAME), true, String.class); + adapter = new Adapter(gson, mget(GET_VALUE_NAME), String.class); assertEquals(VALUE_NAME, adapter.getPropName()); assertEquals(MY_NAME + ".getValue", adapter.getFullName()); @@ -177,7 +177,7 @@ public class AdapterTest { // test setter - adapter = new Adapter(gson, mset("setValue"), false, String.class); + adapter = new Adapter(gson, mset("setValue"), String.class); assertEquals(VALUE_NAME, adapter.getPropName()); assertEquals(MY_NAME + ".setValue", adapter.getFullName()); diff --git a/gson/src/test/java/org/onap/policy/common/gson/internal/AnyGetterSerializerTest.java b/gson/src/test/java/org/onap/policy/common/gson/internal/AnyGetterSerializerTest.java new file mode 100644 index 00000000..75128420 --- /dev/null +++ b/gson/src/test/java/org/onap/policy/common/gson/internal/AnyGetterSerializerTest.java @@ -0,0 +1,134 @@ +/* + * ============LICENSE_START======================================================= + * ONAP + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.common.gson.internal; + +import static org.assertj.core.api.Assertions.assertThatThrownBy; +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertTrue; + +import com.google.gson.Gson; +import com.google.gson.GsonBuilder; +import com.google.gson.JsonObject; +import com.google.gson.JsonParseException; +import java.util.Arrays; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; +import org.junit.Before; +import org.junit.Test; +import org.onap.policy.common.gson.JacksonExclusionStrategy; +import org.onap.policy.common.gson.internal.AnyGetterSerializer; +import org.onap.policy.common.gson.internal.DataAdapterFactory.Data; + +public class AnyGetterSerializerTest { + + private static DataAdapterFactory dataAdapter = new DataAdapterFactory(); + + private static Gson gson = new GsonBuilder().registerTypeAdapterFactory(dataAdapter) + .setExclusionStrategies(new JacksonExclusionStrategy()).create(); + + private Set<String> set; + private AnyGetterSerializer ser; + + /** + * Set up. + * + * @throws Exception if an error occurs + */ + @Before + public void setUp() throws Exception { + set = new HashSet<>(Arrays.asList("id", "value")); + ser = new AnyGetterSerializer(gson, set, MapData.class.getDeclaredMethod("getTheMap")); + } + + @Test + public void testAddToTree_testCopyLiftedItems() throws Exception { + JsonObject tree = new JsonObject(); + tree.addProperty("hello", "world"); + + MapData data = new MapData(); + + data.map = DataAdapterFactory.makeMap(); + + // this should not be copied because it is in the "set" + data.map.put("value", Arrays.asList(new Data(1000))); + + dataAdapter.reset(); + JsonObject tree2 = tree.deepCopy(); + ser.addToTree(data, tree2); + + assertTrue(dataAdapter.isDataWritten()); + + DataAdapterFactory.addToObject(tree); + + assertEquals(tree.toString(), tree2.toString()); + } + + @Test + public void testAddToTree_NullMap() throws Exception { + JsonObject tree = new JsonObject(); + tree.addProperty("hello", "world"); + + MapData data = new MapData(); + + // leave "map" unset + + JsonObject tree2 = tree.deepCopy(); + ser.addToTree(data, tree2); + + assertEquals(tree.toString(), tree2.toString()); + } + + @Test + public void testAddToTree_NotAnObject() throws Exception { + ser = new AnyGetterSerializer(gson, set, NotAnObject.class.getDeclaredMethod("getNonMap")); + + JsonObject tree = new JsonObject(); + + NotAnObject data = new NotAnObject(); + data.text = "bye bye"; + + assertThatThrownBy(() -> ser.addToTree(data, tree)).isInstanceOf(JsonParseException.class) + .hasMessage(AnyGetterSerializer.NOT_AN_OBJECT_ERR + NotAnObject.class.getName() + ".getNonMap"); + } + + public static class MapData { + protected int id; + protected String value; + protected Map<String, List<Data>> map; + + protected Map<String, List<Data>> getTheMap() { + return map; + } + } + + /** + * The "lifted" property is not a JsonObject so it should throw an exception. + */ + public static class NotAnObject { + protected String text; + + public String getNonMap() { + return text; + } + } +} diff --git a/gson/src/test/java/org/onap/policy/common/gson/internal/AnySetterDeserializerTest.java b/gson/src/test/java/org/onap/policy/common/gson/internal/AnySetterDeserializerTest.java new file mode 100644 index 00000000..b180605e --- /dev/null +++ b/gson/src/test/java/org/onap/policy/common/gson/internal/AnySetterDeserializerTest.java @@ -0,0 +1,94 @@ +/* + * ============LICENSE_START======================================================= + * ONAP + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.common.gson.internal; + +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertNotNull; +import static org.junit.Assert.assertTrue; + +import com.google.gson.Gson; +import com.google.gson.GsonBuilder; +import com.google.gson.JsonObject; +import java.util.Arrays; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.TreeMap; +import org.junit.Before; +import org.junit.Test; +import org.onap.policy.common.gson.JacksonExclusionStrategy; +import org.onap.policy.common.gson.internal.AnySetterDeserializer; +import org.onap.policy.common.gson.internal.DataAdapterFactory.Data; + +public class AnySetterDeserializerTest { + + private static DataAdapterFactory dataAdapter = new DataAdapterFactory(); + + private static Gson gson = new GsonBuilder().registerTypeAdapterFactory(dataAdapter) + .setExclusionStrategies(new JacksonExclusionStrategy()).create(); + + private Set<String> set; + private AnySetterDeserializer deser; + + /** + * Set up. + * + * @throws Exception if an error occurs + */ + @Before + public void setUp() throws Exception { + set = new HashSet<>(Arrays.asList("id", "value")); + deser = new AnySetterDeserializer(gson, set, + MapData.class.getDeclaredMethod("setItem", String.class, List.class)); + } + + @Test + public void testAnySetterDeserializer() { + JsonObject json = new JsonObject(); + + // these should not be copied + json.addProperty("id", 10); + json.addProperty("value", "the-value"); + + // these should be copied + DataAdapterFactory.addToObject(json); + + MapData data = new MapData(); + data.map = new TreeMap<>(); + + dataAdapter.reset(); + deser.getFromTree(json, data); + + assertTrue(dataAdapter.isDataRead()); + assertNotNull(data.map); + assertEquals(DataAdapterFactory.makeMap().toString(), data.map.toString()); + } + + public static class MapData { + protected Map<String, List<Data>> map; + + protected void setItem(String key, List<Data> value) { + map.put(key, value); + } + } + +} diff --git a/gson/src/test/java/org/onap/policy/common/gson/internal/LifterTest.java b/gson/src/test/java/org/onap/policy/common/gson/internal/LifterTest.java new file mode 100644 index 00000000..55a3b674 --- /dev/null +++ b/gson/src/test/java/org/onap/policy/common/gson/internal/LifterTest.java @@ -0,0 +1,55 @@ +/* + * ============LICENSE_START======================================================= + * ONAP + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.common.gson.internal; + +import static org.junit.Assert.assertFalse; +import static org.junit.Assert.assertTrue; + +import com.google.gson.Gson; +import java.util.Arrays; +import java.util.HashSet; +import java.util.Set; +import org.junit.Test; +import org.onap.policy.common.gson.internal.Lifter; + +public class LifterTest { + + private static Gson gson = new Gson(); + + @Test + public void testLifter_testShouldLift() throws Exception { + Set<String> set = new HashSet<>(Arrays.asList("abc", "def")); + Lifter lifter = new Lifter(gson, set, LifterTest.class.getDeclaredMethod("getValue"), String.class); + + // should not lift these + assertFalse(lifter.shouldLift("abc")); + assertFalse(lifter.shouldLift("def")); + + // should lift anything else + assertTrue(lifter.shouldLift("hello")); + assertTrue(lifter.shouldLift("world")); + } + + public String getValue() { + return ""; + } + +} diff --git a/gson/src/test/java/org/onap/policy/common/gson/internal/MethodAdapterTest.java b/gson/src/test/java/org/onap/policy/common/gson/internal/MethodAdapterTest.java new file mode 100644 index 00000000..9f39e3ce --- /dev/null +++ b/gson/src/test/java/org/onap/policy/common/gson/internal/MethodAdapterTest.java @@ -0,0 +1,58 @@ +/* + * ============LICENSE_START======================================================= + * ONAP + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.common.gson.internal; + +import static org.assertj.core.api.Assertions.assertThatThrownBy; +import static org.junit.Assert.assertEquals; + +import com.google.gson.Gson; +import com.google.gson.JsonParseException; +import org.junit.Test; +import org.onap.policy.common.gson.internal.MethodAdapter; + +public class MethodAdapterTest { + private static final Gson gson = new Gson(); + + private String saved; + + @Test + public void testMethodAdapter_testInvoke() throws Exception { + MethodAdapter adapter = + new MethodAdapter(gson, MethodAdapterTest.class.getDeclaredMethod("getValue"), String.class); + assertEquals("hello", adapter.invoke(this)); + + MethodAdapter adapter2 = new MethodAdapter(gson, + MethodAdapterTest.class.getDeclaredMethod("setValue", String.class), String.class); + adapter2.invoke(this, "world"); + assertEquals("world", saved); + + assertThatThrownBy(() -> adapter2.invoke(this, 100)).isInstanceOf(JsonParseException.class) + .hasMessage(MethodAdapter.INVOKE_ERR + MethodAdapterTest.class.getName() + ".setValue"); + } + + public String getValue() { + return "hello"; + } + + public void setValue(String val) { + saved = val; + } +} diff --git a/gson/src/test/java/org/onap/policy/common/gson/internal/MethodDeserializerTest.java b/gson/src/test/java/org/onap/policy/common/gson/internal/MethodDeserializerTest.java new file mode 100644 index 00000000..338644ae --- /dev/null +++ b/gson/src/test/java/org/onap/policy/common/gson/internal/MethodDeserializerTest.java @@ -0,0 +1,100 @@ +/* + * ============LICENSE_START======================================================= + * ONAP + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.common.gson.internal; + +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertNotNull; +import static org.junit.Assert.assertTrue; + +import com.google.gson.Gson; +import com.google.gson.GsonBuilder; +import com.google.gson.JsonNull; +import com.google.gson.JsonObject; +import java.util.List; +import org.junit.Test; +import org.onap.policy.common.gson.JacksonExclusionStrategy; +import org.onap.policy.common.gson.internal.DataAdapterFactory.Data; +import org.onap.policy.common.gson.internal.MethodDeserializer; + +public class MethodDeserializerTest { + private static final String PROP_NAME = "text"; + private static final String METHOD_NAME = "setText"; + private static final String INITIAL_VALUE = "initial value"; + private static final String NEW_VALUE = "new value"; + + private static DataAdapterFactory dataAdapter = new DataAdapterFactory(); + + private static Gson gson = new GsonBuilder().registerTypeAdapterFactory(dataAdapter) + .setExclusionStrategies(new JacksonExclusionStrategy()).create(); + + private MethodDeserializer deser; + + private String text; + + private List<Data> listField; + + @Test + public void testGetFromTree() throws Exception { + deser = new MethodDeserializer(gson, MethodDeserializerTest.class.getDeclaredMethod(METHOD_NAME, String.class)); + + // non-existent value - should not overwrite + text = INITIAL_VALUE; + JsonObject json = new JsonObject(); + deser.getFromTree(json, this); + assertEquals(INITIAL_VALUE, text); + + // null value - should not overwrite + text = INITIAL_VALUE; + json.add(PROP_NAME, JsonNull.INSTANCE); + deser.getFromTree(json, this); + assertEquals(INITIAL_VALUE, text); + + // has a value - should store it + text = INITIAL_VALUE; + json.addProperty(PROP_NAME, NEW_VALUE); + deser.getFromTree(json, this); + assertEquals(NEW_VALUE, text); + + /* + * check list field + */ + deser = new MethodDeserializer(gson, MethodDeserializerTest.class.getDeclaredMethod("setTheList", List.class)); + + json = new JsonObject(); + json.add("theList", DataAdapterFactory.makeArray()); + + dataAdapter.reset(); + listField = null; + deser.getFromTree(json, this); + + assertTrue(dataAdapter.isDataRead()); + assertNotNull(listField); + assertEquals(DataAdapterFactory.makeList().toString(), listField.toString()); + } + + protected void setText(String text) { + this.text = text; + } + + protected void setTheList(List<Data> lst) { + listField = lst; + } +} diff --git a/gson/src/test/java/org/onap/policy/common/gson/internal/MethodSerializerTest.java b/gson/src/test/java/org/onap/policy/common/gson/internal/MethodSerializerTest.java new file mode 100644 index 00000000..586bf54d --- /dev/null +++ b/gson/src/test/java/org/onap/policy/common/gson/internal/MethodSerializerTest.java @@ -0,0 +1,88 @@ +/* + * ============LICENSE_START======================================================= + * ONAP + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.common.gson.internal; + +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertTrue; + +import com.google.gson.Gson; +import com.google.gson.GsonBuilder; +import com.google.gson.JsonElement; +import com.google.gson.JsonObject; +import java.util.List; +import org.junit.Test; +import org.onap.policy.common.gson.JacksonExclusionStrategy; +import org.onap.policy.common.gson.internal.DataAdapterFactory.Data; +import org.onap.policy.common.gson.internal.MethodSerializer; + +public class MethodSerializerTest { + private static final String PROP_NAME = "text"; + private static final String METHOD_NAME = "getText"; + + private static DataAdapterFactory dataAdapter = new DataAdapterFactory(); + + private static Gson gson = new GsonBuilder().registerTypeAdapterFactory(dataAdapter) + .setExclusionStrategies(new JacksonExclusionStrategy()).create(); + + private MethodSerializer ser; + + private String text; + + private List<Data> listField; + + @Test + public void testAddToTree() throws Exception { + ser = new MethodSerializer(gson, MethodSerializerTest.class.getDeclaredMethod(METHOD_NAME)); + + // serialize null value first + text = null; + + JsonObject json = new JsonObject(); + ser.addToTree(this, json); + assertTrue(json.get(PROP_NAME).isJsonNull()); + + // serialize an actual value + text = "hello"; + ser.addToTree(this, json); + assertEquals("hello", json.get(PROP_NAME).getAsString()); + + /* + * check list field + */ + listField = DataAdapterFactory.makeList(); + + ser = new MethodSerializer(gson, MethodSerializerTest.class.getDeclaredMethod("getTheList")); + + dataAdapter.reset(); + JsonElement tree = ser.toJsonTree(listField); + + assertTrue(dataAdapter.isDataWritten()); + assertEquals(DataAdapterFactory.ENCODED_LIST, tree.toString()); + } + + protected String getText() { + return text; + } + + protected List<Data> getTheList() { + return listField; + } +} |