aboutsummaryrefslogtreecommitdiffstats
path: root/context/context-management/src/test/java/org
diff options
context:
space:
mode:
Diffstat (limited to 'context/context-management/src/test/java/org')
-rw-r--r--context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/BadJsonAdapter.java63
-rw-r--r--context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelperParametersTest.java101
-rw-r--r--context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelperTest.java132
-rw-r--r--context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/TestJsonAdapter.java55
-rw-r--r--context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/TestJsonDeserializer.java44
-rw-r--r--context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/TestJsonSerializer.java50
6 files changed, 425 insertions, 20 deletions
diff --git a/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/BadJsonAdapter.java b/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/BadJsonAdapter.java
new file mode 100644
index 000000000..fef69ac33
--- /dev/null
+++ b/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/BadJsonAdapter.java
@@ -0,0 +1,63 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2018 Ericsson. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.apex.context.impl.schema.java;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+
+import java.lang.reflect.Type;
+
+/**
+ * This class serialises and deserialises various type of event protocol parameters to and from
+ * JSON.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public class BadJsonAdapter
+ implements JsonSerializer<String>, JsonDeserializer<String> {
+
+ public BadJsonAdapter() throws IllegalAccessException {
+ throw new IllegalAccessException("Test for Bad Adapter");
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public JsonElement serialize(final String src, final Type typeOfSrc,
+ final JsonSerializationContext context) {
+ return new Gson().toJsonTree(src, String.class);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public String deserialize(final JsonElement json, final Type typeOfT,
+ final JsonDeserializationContext context) {
+
+ return new Gson().fromJson(json, String.class);
+ }
+}
diff --git a/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelperParametersTest.java b/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelperParametersTest.java
new file mode 100644
index 000000000..c0287bfe2
--- /dev/null
+++ b/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelperParametersTest.java
@@ -0,0 +1,101 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2018 Ericsson. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.apex.context.impl.schema.java;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import org.junit.Test;
+
+/**
+ * Test Java schema helper parameters.
+ */
+public class JavaSchemaHelperParametersTest {
+
+ @Test
+ public void testJavaSchemaHelperParameters() {
+ JavaSchemaHelperParameters pars = new JavaSchemaHelperParameters();
+
+ assertEquals("org.onap.policy.apex.context.impl.schema.java.JavaSchemaHelper",
+ pars.getSchemaHelperPluginClass());
+
+ assertEquals(0, pars.getJsonAdapters().size());
+
+ JavaSchemaHelperJsonAdapterParameters jsonPars = new JavaSchemaHelperJsonAdapterParameters();
+ pars.getJsonAdapters().put("JsonAdapter0", jsonPars);
+
+ assertFalse(pars.validate().isValid());
+
+ jsonPars.setAdaptedClass("AAA");
+ jsonPars.setAdaptorClass("AAA");
+ assertFalse(pars.validate().isValid());
+
+ jsonPars.setAdaptedClass("java.lang.String");
+ jsonPars.setAdaptorClass("AAA");
+ assertFalse(pars.validate().isValid());
+
+ jsonPars.setAdaptedClass("AAA");
+ jsonPars.setAdaptorClass("java.lang.String");
+ assertFalse(pars.validate().isValid());
+
+ jsonPars.setAdaptedClass("java.lang.String");
+ jsonPars.setAdaptorClass("org.onap.policy.apex.context.impl.schema.java.TestJsonDeserializer");
+ assertFalse(pars.validate().isValid());
+
+ jsonPars.setAdaptedClass("java.lang.String");
+ jsonPars.setAdaptorClass("org.onap.policy.apex.context.impl.schema.java.TestJsonSerializer");
+ assertFalse(pars.validate().isValid());
+
+ jsonPars.setAdaptedClass("java.lang.String");
+ jsonPars.setAdaptorClass("org.onap.policy.apex.context.impl.schema.java.TestJsonAdapter");
+ assertTrue(pars.validate().isValid());
+
+ Map<String, JavaSchemaHelperJsonAdapterParameters> adapterMap = new LinkedHashMap<>();
+
+ pars.setJsonAdapters(adapterMap);
+ assertTrue(pars.validate().isValid());
+ }
+
+ @Test
+ public void testJavaSchemaHelperJsonAdapterParameters() {
+ JavaSchemaHelperJsonAdapterParameters pars = new JavaSchemaHelperJsonAdapterParameters();
+
+ assertNull(pars.getName());
+ assertNull(pars.getAdaptedClass());
+ assertNull(pars.getAdaptedClazz());
+ assertNull(pars.getAdaptorClass());
+ assertNull(pars.getAdaptorClazz());
+
+ pars.setName("Zooby");
+ assertEquals("Zooby", pars.getAdaptedClass());
+ assertEquals("Zooby", pars.getName());
+ assertNull(pars.getAdaptedClazz());
+
+ pars.setAdaptorClass("Zooby");
+ assertEquals("Zooby", pars.getAdaptorClass());
+ assertNull(pars.getAdaptorClazz());
+ }
+}
diff --git a/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelperTest.java b/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelperTest.java
index 8da6fdab9..c746198e7 100644
--- a/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelperTest.java
+++ b/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelperTest.java
@@ -28,16 +28,44 @@ import com.google.gson.JsonParser;
import com.google.gson.JsonPrimitive;
import java.math.BigDecimal;
+import java.time.Instant;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
import org.junit.Test;
import org.onap.policy.apex.context.ContextRuntimeException;
import org.onap.policy.apex.context.SchemaHelper;
+import org.onap.policy.apex.context.parameters.ContextParameterConstants;
+import org.onap.policy.apex.context.parameters.SchemaParameters;
import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
import org.onap.policy.apex.model.contextmodel.concepts.AxContextSchema;
-
+import org.onap.policy.common.parameters.ParameterService;
public class JavaSchemaHelperTest {
+ /**
+ * Initialize JSON adapters.
+ */
+ @BeforeClass
+ public static void registerParameters() {
+ JavaSchemaHelperParameters javaSchemaHelperPars = new JavaSchemaHelperParameters();
+
+ JavaSchemaHelperJsonAdapterParameters stringAdapterPars = new JavaSchemaHelperJsonAdapterParameters();
+ stringAdapterPars.setAdaptedClass("java.lang.String");
+ stringAdapterPars.setAdaptorClass("org.onap.policy.apex.context.impl.schema.java.TestJsonAdapter");
+
+ javaSchemaHelperPars.getJsonAdapters().put("String", stringAdapterPars);
+
+ SchemaParameters schemaPars = new SchemaParameters();
+ schemaPars.getSchemaHelperParameterMap().put("Java", javaSchemaHelperPars);
+
+ ParameterService.register(schemaPars);
+ }
+
+ @AfterClass
+ public static void deregisterParameters() {
+ ParameterService.clear();
+ }
@Test
public void testJavaSchemaHelperInit() {
@@ -51,7 +79,7 @@ public class JavaSchemaHelperTest {
fail("test should throw an exception here");
} catch (ContextRuntimeException e) {
assertEquals("UserKey:0.0.1: class/type java.lang.Rubbish for context schema"
- + " \"SchemaKey:0.0.1\" not found. Check the class path of the JVM", e.getMessage());
+ + " \"SchemaKey:0.0.1\" not found. Check the class path of the JVM", e.getMessage());
}
AxContextSchema builtInJavaTypeSchema = new AxContextSchema(schemaKey, "Java", "short");
@@ -61,8 +89,8 @@ public class JavaSchemaHelperTest {
fail("test should throw an exception here");
} catch (ContextRuntimeException e) {
assertEquals("UserKey:0.0.1: class/type short for context schema "
- + "\"SchemaKey:0.0.1\" not found. Primitive types are not supported."
- + " Use the appropriate Java boxing type instead.", e.getMessage());
+ + "\"SchemaKey:0.0.1\" not found. Primitive types are not supported."
+ + " Use the appropriate Java boxing type instead.", e.getMessage());
}
}
@@ -80,7 +108,7 @@ public class JavaSchemaHelperTest {
fail("test should throw an exception here");
} catch (ContextRuntimeException e) {
assertEquals("NULL:0.0.0: could not create an instance, schema class for the schema is null",
- e.getMessage());
+ e.getMessage());
}
try {
@@ -88,7 +116,7 @@ public class JavaSchemaHelperTest {
fail("test should throw an exception here");
} catch (ContextRuntimeException e) {
assertEquals("NULL:0.0.0: could not create an instance, schema class for the schema is null",
- e.getMessage());
+ e.getMessage());
}
try {
@@ -96,7 +124,7 @@ public class JavaSchemaHelperTest {
fail("test should throw an exception here");
} catch (ContextRuntimeException e) {
assertEquals("NULL:0.0.0: could not create an instance, schema class for the schema is null",
- e.getMessage());
+ e.getMessage());
}
AxArtifactKey schemaKey = new AxArtifactKey("SchemaKey", "0.0.1");
@@ -114,7 +142,7 @@ public class JavaSchemaHelperTest {
fail("test should throw an exception here");
} catch (ContextRuntimeException e) {
assertEquals("UserKey:0.0.1: could not create an instance of class "
- + "\"java.lang.Integer\" using the default constructor \"Integer()\"", e.getMessage());
+ + "\"java.lang.Integer\" using the default constructor \"Integer()\"", e.getMessage());
}
try {
@@ -122,8 +150,8 @@ public class JavaSchemaHelperTest {
fail("test should throw an exception here");
} catch (ContextRuntimeException e) {
assertEquals("UserKey:0.0.1: the object \"1.23\" of type "
- + "\"java.lang.Float\" is not an instance of JsonObject and is not "
- + "assignable to \"java.lang.Integer\"", e.getMessage());
+ + "\"java.lang.Float\" is not an instance of JsonObject and is not "
+ + "assignable to \"java.lang.Integer\"", e.getMessage());
}
try {
@@ -131,7 +159,7 @@ public class JavaSchemaHelperTest {
fail("test should throw an exception here");
} catch (ContextRuntimeException e) {
assertEquals("UserKey:0.0.1: could not create an instance of class \"java.lang.Integer\" "
- + "using the string constructor \"Integer(String)\"", e.getMessage());
+ + "using the string constructor \"Integer(String)\"", e.getMessage());
}
JsonElement jsonIntElement = null;
@@ -183,8 +211,8 @@ public class JavaSchemaHelperTest {
doubleSchemaHelper.init(userKey, doubleSchema);
stringSchemaHelper.init(userKey, stringSchema);
- AxContextSchema myBaseClassSchema =
- new AxContextSchema(schemaKey, "Java", "org.onap.policy.apex.context.impl.schema.java.MyBaseClass");
+ AxContextSchema myBaseClassSchema = new AxContextSchema(schemaKey, "Java",
+ "org.onap.policy.apex.context.impl.schema.java.MyBaseClass");
SchemaHelper myBaseClassSchemaHelper = new JavaSchemaHelper();
myBaseClassSchemaHelper.init(userKey, myBaseClassSchema);
@@ -201,7 +229,7 @@ public class JavaSchemaHelperTest {
fail("test should throw an exception here");
} catch (ContextRuntimeException e) {
assertEquals("UserKey:0.0.1: object \"one two three\" of class \"java.lang.String\" not "
- + "compatible with class \"java.lang.Byte\"", e.getMessage());
+ + "compatible with class \"java.lang.Byte\"", e.getMessage());
}
assertEquals(null, shortSchemaHelper.unmarshal(null));
@@ -217,7 +245,7 @@ public class JavaSchemaHelperTest {
fail("test should throw an exception here");
} catch (ContextRuntimeException e) {
assertEquals("UserKey:0.0.1: object \"one two three\" of class \"java.lang.String\" not "
- + "compatible with class \"java.lang.Short\"", e.getMessage());
+ + "compatible with class \"java.lang.Short\"", e.getMessage());
}
assertEquals(null, intSchemaHelper.unmarshal(null));
@@ -233,7 +261,7 @@ public class JavaSchemaHelperTest {
fail("test should throw an exception here");
} catch (ContextRuntimeException e) {
assertEquals("UserKey:0.0.1: object \"one two three\" of class \"java.lang.String\" not "
- + "compatible with class \"java.lang.Integer\"", e.getMessage());
+ + "compatible with class \"java.lang.Integer\"", e.getMessage());
}
assertEquals(null, longSchemaHelper.unmarshal(null));
@@ -249,7 +277,7 @@ public class JavaSchemaHelperTest {
fail("test should throw an exception here");
} catch (ContextRuntimeException e) {
assertEquals("UserKey:0.0.1: object \"one two three\" of class \"java.lang.String\" not "
- + "compatible with class \"java.lang.Long\"", e.getMessage());
+ + "compatible with class \"java.lang.Long\"", e.getMessage());
}
assertEquals(null, floatSchemaHelper.unmarshal(null));
@@ -265,7 +293,7 @@ public class JavaSchemaHelperTest {
fail("test should throw an exception here");
} catch (ContextRuntimeException e) {
assertEquals("UserKey:0.0.1: object \"one two three\" of class \"java.lang.String\" not "
- + "compatible with class \"java.lang.Float\"", e.getMessage());
+ + "compatible with class \"java.lang.Float\"", e.getMessage());
}
assertEquals(null, doubleSchemaHelper.unmarshal(null));
@@ -282,7 +310,7 @@ public class JavaSchemaHelperTest {
fail("test should throw an exception here");
} catch (ContextRuntimeException e) {
assertEquals("UserKey:0.0.1: object \"one two three\" of class \"java.lang.String\" not "
- + "compatible with class \"java.lang.Double\"", e.getMessage());
+ + "compatible with class \"java.lang.Double\"", e.getMessage());
}
assertEquals("123", stringSchemaHelper.unmarshal(123));
@@ -307,10 +335,74 @@ public class JavaSchemaHelperTest {
fail("test should throw an exception here");
} catch (ContextRuntimeException e) {
assertEquals("UserKey:0.0.1: object \"123.45\" of class \"java.lang.Double\" not "
- + "compatible with class \"java.lang.Integer\"", e.getMessage());
+ + "compatible with class \"java.lang.Integer\"", e.getMessage());
}
JsonPrimitive intJsonPrimitive = (JsonPrimitive) intSchemaHelper.marshal2Object(123);
assertEquals(123, intJsonPrimitive.getAsInt());
}
+
+ @Test
+ public void testJavaSchemaHelperAdapters() {
+ AxArtifactKey schemaKey = new AxArtifactKey("SchemaKey", "0.0.1");
+ AxArtifactKey userKey = new AxArtifactKey("UserKey", "0.0.1");
+
+ AxContextSchema stringSchema = new AxContextSchema(schemaKey, "Java", "java.lang.String");
+ SchemaHelper stringSchemaHelper = new JavaSchemaHelper();
+ stringSchemaHelper.init(userKey, stringSchema);
+
+ assertEquals("null", stringSchemaHelper.marshal2String(null));
+ assertEquals("\"Hello\"", stringSchemaHelper.marshal2String("Hello"));
+ try {
+ stringSchemaHelper.marshal2String(Instant.ofEpochMilli(1000));
+ fail("test should throw an exception here");
+ } catch (ContextRuntimeException e) {
+ assertEquals("UserKey:0.0.1: object \"1970-01-01T00:00:01Z\" of class \"java.time.Instant\" "
+ + "not compatible with class \"java.lang.String\"", e.getMessage());
+ }
+
+ JsonPrimitive stringJsonPrimitive = (JsonPrimitive) stringSchemaHelper.marshal2Object("Another String");
+ assertEquals("Another String", stringJsonPrimitive.getAsString());
+ }
+
+ @Test
+ public void testJavaSchemaHelperBadAdapter() {
+ AxArtifactKey schemaKey = new AxArtifactKey("SchemaKey", "0.0.1");
+ AxArtifactKey userKey = new AxArtifactKey("UserKey", "0.0.1");
+
+ SchemaParameters pars = ParameterService.get(ContextParameterConstants.SCHEMA_GROUP_NAME);
+
+ JavaSchemaHelperParameters javaShPars = (JavaSchemaHelperParameters) pars.getSchemaHelperParameterMap()
+ .get("Java");
+ javaShPars.getJsonAdapters().get("String")
+ .setAdaptorClass("org.onap.policy.apex.context.impl.schema.java.BadJsonAdapter");
+
+ AxContextSchema stringSchema = new AxContextSchema(schemaKey, "Java", "java.lang.String");
+ SchemaHelper stringSchemaHelper = new JavaSchemaHelper();
+ stringSchemaHelper.init(userKey, stringSchema);
+
+ try {
+ stringSchemaHelper.marshal2String("Hello");
+ fail("test should throw an exception");
+ } catch (ContextRuntimeException pre) {
+ assertEquals("UserKey:0.0.1: instantiation of adapter class "
+ + "\"org.onap.policy.apex.context.impl.schema.java.BadJsonAdapter\" "
+ + "to decode and encode class \"java.lang.String\" failed: Test for Bad Adapter",
+ pre.getMessage());
+ }
+ }
+
+ @Test
+ public void testJavaSchemaHelperDefaultAdapter() {
+ SchemaParameters pars = ParameterService.get(ContextParameterConstants.SCHEMA_GROUP_NAME);
+
+ JavaSchemaHelperParameters javaShPars = (JavaSchemaHelperParameters) pars.getSchemaHelperParameterMap()
+ .get("Java");
+
+ pars.getSchemaHelperParameterMap().clear();
+
+ testJavaSchemaHelperAdapters();
+
+ pars.getSchemaHelperParameterMap().put("Java", javaShPars);
+ }
}
diff --git a/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/TestJsonAdapter.java b/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/TestJsonAdapter.java
new file mode 100644
index 000000000..89dfb4c2d
--- /dev/null
+++ b/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/TestJsonAdapter.java
@@ -0,0 +1,55 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2018 Ericsson. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.apex.context.impl.schema.java;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+
+import java.lang.reflect.Type;
+
+/**
+ * This class serialises and deserialises various type of event protocol parameters to and from JSON.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public class TestJsonAdapter implements JsonSerializer<String>, JsonDeserializer<String> {
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public JsonElement serialize(final String src, final Type typeOfSrc, final JsonSerializationContext context) {
+ return new Gson().toJsonTree(src, String.class);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public String deserialize(final JsonElement json, final Type typeOfT, final JsonDeserializationContext context) {
+
+ return new Gson().fromJson(json, String.class);
+ }
+}
diff --git a/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/TestJsonDeserializer.java b/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/TestJsonDeserializer.java
new file mode 100644
index 000000000..463945872
--- /dev/null
+++ b/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/TestJsonDeserializer.java
@@ -0,0 +1,44 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2018 Ericsson. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.apex.context.impl.schema.java;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+
+import java.lang.reflect.Type;
+
+/**
+ * This class serialises and deserialises various type of event protocol parameters to and from JSON.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public class TestJsonDeserializer implements JsonDeserializer<String> {
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public String deserialize(final JsonElement json, final Type typeOfT, final JsonDeserializationContext context) {
+
+ return new Gson().fromJson(json, String.class);
+ }
+}
diff --git a/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/TestJsonSerializer.java b/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/TestJsonSerializer.java
new file mode 100644
index 000000000..d58be6069
--- /dev/null
+++ b/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/TestJsonSerializer.java
@@ -0,0 +1,50 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2018 Ericsson. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.apex.context.impl.schema.java;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+
+import java.lang.reflect.Type;
+
+import org.onap.policy.common.parameters.ParameterRuntimeException;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+
+/**
+ * This class serialises and deserialises various type of event protocol parameters to and from JSON.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public class TestJsonSerializer implements JsonSerializer<String> {
+ private static final XLogger LOGGER = XLoggerFactory.getXLogger(TestJsonSerializer.class);
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public JsonElement serialize(final String src, final Type typeOfSrc, final JsonSerializationContext context) {
+ final String returnMessage = "serialization of Apex event protocol parameters to Json is not supported";
+ LOGGER.error(returnMessage);
+ throw new ParameterRuntimeException(returnMessage);
+ }
+}