diff options
Diffstat (limited to 'env/src/main/java/org/onap/aaf/inno/env/jaxb/JAXBData.java')
| -rw-r--r-- | env/src/main/java/org/onap/aaf/inno/env/jaxb/JAXBData.java | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/env/src/main/java/org/onap/aaf/inno/env/jaxb/JAXBData.java b/env/src/main/java/org/onap/aaf/inno/env/jaxb/JAXBData.java new file mode 100644 index 0000000..3b51256 --- /dev/null +++ b/env/src/main/java/org/onap/aaf/inno/env/jaxb/JAXBData.java @@ -0,0 +1,321 @@ +/*******************************************************************************
+ * ============LICENSE_START====================================================
+ * * org.onap.aaf
+ * * ===========================================================================
+ * * Copyright © 2017 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====================================================
+ * *
+ * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * *
+ ******************************************************************************/
+package org.onap.aaf.inno.env.jaxb;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Reader;
+import java.io.Writer;
+
+import javax.xml.bind.JAXBException;
+
+import org.onap.aaf.inno.env.APIException;
+import org.onap.aaf.inno.env.Data;
+import org.onap.aaf.inno.env.Env;
+import org.onap.aaf.inno.env.EnvJAXB;
+import org.onap.aaf.inno.env.old.IOStringifier;
+import org.onap.aaf.inno.env.old.Objectifier;
+import org.onap.aaf.inno.env.old.Stringifier;
+/**
+ * <H1>Data</H1>
+ * <i>Data</i> facilitates lazy marshaling of data with a pre-determined
+ * marshaling mechanism.<p>
+ *
+ * It stores either Object (defined by Generic {@literal <T>}) or String.<p>
+ *
+ * On asking for Object of type {@literal <T>}, it will respond with the object
+ * if it exists, or unmarshal the string and pass the result back.<p>
+ *
+ * On asking for String, it will respond with the String
+ * if it exists, or marshal the String and pass the result back.<p>
+ *
+ *
+ * @param <T>
+ */
+public final class JAXBData<T> implements Data<T>{
+ private Stringifier<T> stringifier;
+ private Objectifier<T> objectifier;
+ private String dataAsString;
+ private T dataAsObject;
+ private Class<T> tclass;
+ private JAXBDF<T> df;
+ private Env creatingEnv;
+ private boolean options[] = new boolean[] {false, false};
+
+ /**
+ * Construct a Data Object with an appropriate Stringifier, Objectifier and Class to support
+ *
+ * @param env
+ * @param strfr
+ * @param objfr
+ * @param text
+ * @param typeClass
+ */
+ JAXBData(Env env, JAXBDF<T> df, Stringifier<T> strfr, Objectifier<T> objfr, String text, Class<T> typeClass) {
+ dataAsString = text;
+ dataAsObject = null;
+ stringifier = strfr;
+ objectifier = objfr;
+ tclass = typeClass;
+ creatingEnv = env;
+ this.df = df;
+ }
+
+
+ /**
+ * Construct a Data Object with an appropriate Stringifier, Objectifier and Object (which will
+ * yield it's class)
+ *
+ * @param env
+ * @param strfr
+ * @param objfr
+ * @param object
+ */
+ @SuppressWarnings("unchecked")
+ JAXBData(Env env, JAXBDF<T> df, Stringifier<T> strfr, Objectifier<T> objfr, T object) {
+ dataAsString = null;
+ dataAsObject = object;
+ stringifier = strfr;
+ objectifier = objfr;
+ tclass = (Class<T>) object.getClass();
+ creatingEnv = env;
+ this.df = df;
+ }
+
+ /**
+ * Respond with the String if it exists, or marshal the String and pass the result back.<p>
+ *
+ * Explicitly use a specific Env for logging purposes
+ *
+ * @param env
+ * @return String
+ * @throws APIException
+ */
+ public String asString(EnvJAXB env) throws APIException {
+ if(dataAsString!=null) {
+ return dataAsString;
+ } else {
+ return dataAsString = stringifier.stringify(env, dataAsObject);
+ }
+ }
+
+ /**
+ * Respond with the String if it exists, or marshal the String and pass the result back.
+ *
+ * However, use the Env the Data Object was created with.
+ *
+ * @return String
+ * @throws APIException
+ */
+ // @Override
+ public String asString() throws APIException {
+ if(dataAsString!=null) {
+ return dataAsString;
+ } else {
+ return dataAsString = stringifier.stringify(creatingEnv, dataAsObject,options);
+ }
+ }
+
+ public Data<T> to(OutputStream os) throws APIException, IOException {
+ if(dataAsString!=null) {
+ os.write(dataAsString.getBytes());
+ } else if (stringifier instanceof IOStringifier){
+ ((IOStringifier<T>)stringifier).stringify(creatingEnv, dataAsObject, os, options);
+ } else {
+ dataAsString = stringifier.stringify(creatingEnv, dataAsObject, options);
+ os.write(dataAsString.getBytes());
+ }
+ return this;
+ }
+
+
+ // @Override
+ public JAXBData<T> to(Writer writer) throws APIException, IOException {
+ if(dataAsString!=null) {
+ writer.write(dataAsString);
+ } else if (stringifier instanceof IOStringifier){
+ ((IOStringifier<T>)stringifier).stringify(creatingEnv, dataAsObject, writer, options);
+ } else {
+ dataAsString = stringifier.stringify(creatingEnv, dataAsObject, options);
+ writer.write(dataAsString);
+ }
+ return this;
+ }
+
+
+ public InputStream getInputStream() throws APIException {
+ if(dataAsString==null) {
+ dataAsString = stringifier.stringify(creatingEnv,dataAsObject,options);
+ }
+ return new ByteArrayInputStream(dataAsString.getBytes());
+ }
+
+ /**
+ * Respond with the Object of type {@literal <T>} if it exists, or unmarshal from String
+ * and pass the result back.<p>
+ *
+ * Explicitly use a specific Env for logging purposes
+ *
+ * @param env
+ * @return T
+ * @throws APIException
+ */
+
+ public T asObject(EnvJAXB env) throws APIException {
+ if(dataAsObject !=null) {
+ return dataAsObject;
+ } else {
+ // Some Java compilers need two statements here
+ dataAsObject = objectifier.objectify(env, dataAsString);
+ return dataAsObject;
+ }
+ }
+
+ /**
+ * Respond with the Object of type {@literal <T>} if it exists, or unmarshal from String
+ * and pass the result back.<p>
+ *
+ * However, use the Env the Data Object was created with.
+ *
+ * @return T
+ * @throws APIException
+ */
+ // @Override
+ public T asObject() throws APIException {
+ if(dataAsObject !=null) {
+ return dataAsObject;
+ } else {
+ // Some Java compilers need two statements here
+ dataAsObject = objectifier.objectify(creatingEnv, dataAsString);
+ return dataAsObject;
+ }
+ }
+
+
+ /**
+ * Return the Class Type supported by this DataObject
+ *
+ * @return {@literal Class<T>}
+ */
+ // @Override
+ public Class<T> getTypeClass() {
+ return tclass;
+ }
+
+
+ /**
+ * For Debugging Convenience, we marshal to String if possible.
+ *
+ * Behavior is essentially the same as asString(), except asString() throws
+ * an APIException. <p>
+ * Since toString() must not throw exceptions, the function just catches and prints an
+ * error, which is probably not the behavior desired.<p>
+ *
+ * Therefore, use "asString()" where possible in actual Transactional code.
+ *
+ * @see java.lang.Object#toString()
+ */
+ // @Override
+ public String toString() {
+ if(dataAsString!=null) {
+ return dataAsString;
+ } else {
+ try {
+ return dataAsString = stringifier.stringify(creatingEnv, dataAsObject);
+ } catch (APIException e) {
+ return "ERROR - Can't Stringify from Object " + e.getLocalizedMessage();
+ }
+ }
+ }
+
+ public Data<T> load(T t) throws APIException {
+ dataAsObject = t;
+ dataAsString = null;
+ return this;
+ }
+
+
+ public Data<T> load(String str) throws APIException {
+ dataAsObject = null;
+ dataAsString = str;
+ return this;
+ }
+
+
+ public Data<T> load(InputStream is) throws APIException {
+ try {
+ dataAsObject = df.jumar.unmarshal(creatingEnv.debug(),is);
+ dataAsString = null;
+ } catch (JAXBException e) {
+ throw new APIException(e);
+ }
+ return this;
+ }
+
+
+ public Data<T> load(Reader rdr) throws APIException {
+ try {
+ dataAsObject = df.jumar.unmarshal(creatingEnv.debug(),rdr);
+ dataAsString = null;
+ } catch (JAXBException e) {
+ throw new APIException(e);
+ }
+ return this;
+ }
+
+
+ // @Override
+ public void direct(InputStream input, OutputStream output) throws APIException, IOException {
+ byte b[] = new byte[128];
+ int count;
+ do {
+ count = input.read(b);
+ if(count>0)output.write(b, 0, count);
+ } while(count>=0);
+ }
+
+
+ // @Override
+ public Data<T> out(TYPE type) {
+ // it's going to be XML regardless...
+ return this;
+ }
+
+
+ // @Override
+ public Data<T> in(TYPE type) {
+ // Not Supported... will still be XML
+ return this;
+ }
+
+
+ // @Override
+ public Data<T> option(int option) {
+ options[0] = (option&Data.PRETTY)==Data.PRETTY;
+ options[1] = (option&Data.FRAGMENT)==Data.FRAGMENT;
+ return this;
+ }
+
+}
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