diff options
Diffstat (limited to 'rosetta/src/main/java/com/att/rosetta/JaxInfo.java')
| -rw-r--r-- | rosetta/src/main/java/com/att/rosetta/JaxInfo.java | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/rosetta/src/main/java/com/att/rosetta/JaxInfo.java b/rosetta/src/main/java/com/att/rosetta/JaxInfo.java new file mode 100644 index 0000000..23785af --- /dev/null +++ b/rosetta/src/main/java/com/att/rosetta/JaxInfo.java @@ -0,0 +1,250 @@ +/*******************************************************************************
+ * ============LICENSE_START====================================================
+ * * org.onap.aai
+ * * ===========================================================================
+ * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+ * * Copyright © 2017 Amdocs
+ * * ===========================================================================
+ * * 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 com.att.rosetta;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlRootElement;
+import javax.xml.bind.annotation.XmlSchema;
+import javax.xml.bind.annotation.XmlType;
+import javax.xml.datatype.XMLGregorianCalendar;
+
+public class JaxInfo {
+ private static final String DEFAULT = "##default";
+ public static final int DATA = 0;
+ public static final int ARRAY = 1;
+ public static final int OBJECT = 2;
+
+ public final String name;
+ public final Class<?> clss;
+ public Map<String, JaxInfo> extensions; // Classes, which might be found at runtime, that extend this class. Lazy Instantiation
+ public final JaxInfo[] members;
+ public final boolean isArray;
+ public final boolean isString;
+ public final boolean required;
+ public final boolean nillable;
+ public String ns;
+ public boolean isObject() {return members!=null;}
+
+ private JaxInfo(String n, String ns, Class<?> c, JaxInfo[] members, boolean string, boolean array, boolean required, boolean nillable) {
+ name = n;
+ this.ns = ns;
+ clss = c;
+ this.members = members;
+ this.isString = string;
+ isArray = array;
+ this.required = required;
+ this.nillable = nillable;
+ extensions = null;
+ }
+
+
+ public int getType() {
+ if(isArray)return ARRAY;
+ else if(members!=null)return OBJECT;
+ return DATA;
+ }
+
+ public JaxInfo getDerived(String derivedName) {
+ JaxInfo derived;
+ // Lazy Instantiation
+ if(extensions == null) {
+ extensions = new HashMap<String,JaxInfo>();
+ derived = null;
+ } else {
+ derived = extensions.get(derivedName);
+ }
+
+ if(derived == null) {
+ //TODO for the moment, Classes are in same package
+ Package pkg = clss.getPackage();
+ try {
+ Class<?> dc = getClass().getClassLoader().loadClass(pkg.getName()+'.'+Character.toUpperCase(derivedName.charAt(0))+derivedName.substring(1));
+ derived = JaxInfo.build(dc, this); // Use this JAXInfo's name so the tags are correct
+ extensions.put(derivedName, derived);
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+ return derived;
+ }
+
+ public static JaxInfo get(JaxInfo[] fields, String name) {
+ for(JaxInfo f : fields) {
+ if(name.equals(f.name)) return f;
+ }
+ return null;
+ }
+
+ /**
+ * Build up JAXB Information (recursively)
+ *
+ * @param cls
+ * @param rootNns
+ * @return
+ * @throws SecurityException
+ * @throws NoSuchFieldException
+ * @throws ClassNotFoundException
+ * @throws ParseException
+ */
+ public static JaxInfo build(Class<?> cls, JaxInfo parent) throws NoSuchFieldException, ClassNotFoundException, ParseException {
+ return new JaxInfo(parent.name,parent.ns, cls,buildFields(cls,parent.ns),parent.isString, parent.isArray,parent.required,parent.nillable);
+ }
+ /**
+ * Build up JAXB Information (recursively)
+ *
+ * @param cls
+ * @param rootNns
+ * @return
+ * @throws SecurityException
+ * @throws NoSuchFieldException
+ * @throws ClassNotFoundException
+ * @throws ParseException
+ */
+ public static JaxInfo build(Class<?> cls, String ... rootNns) throws SecurityException, NoSuchFieldException, ClassNotFoundException, ParseException {
+ String defaultNS;
+ if(rootNns.length>0 && rootNns[0]!=null) {
+ defaultNS = rootNns[0];
+ } else {
+ Package pkg = cls.getPackage();
+ XmlSchema xs = pkg.getAnnotation(XmlSchema.class);
+ defaultNS = xs==null?"":xs.namespace();
+ }
+ String name;
+ if(rootNns.length>1) {
+ name = rootNns[1];
+ } else {
+ XmlRootElement xre = cls.getAnnotation(XmlRootElement.class);
+ if(xre!=null) {
+ name = xre.name();
+ } else {
+ XmlType xt = cls.getAnnotation(XmlType.class);
+ if(xt!=null) {
+ name=xt.name();
+ } else {
+ throw new ParseException("Need a JAXB Object with XmlRootElement, or stipulate in parms");
+ }
+ }
+ }
+
+ return new JaxInfo(name,defaultNS, cls,buildFields(cls,defaultNS),false,false,false,false);
+ }
+
+ // Build up the name and members of this particular class
+ // This is recursive, if a member is a JAXB Object as well.
+ private static JaxInfo[] buildFields(Class<?> clazz, String defaultNS) throws SecurityException, NoSuchFieldException, ClassNotFoundException {
+ ArrayList<JaxInfo> fields = null; // allow for lazy instantiation, because many structures won't have XmlType
+ Class<?> cls = clazz;
+ // Build up Method names from JAXB Annotations
+ XmlType xt;
+ while((xt = cls.getAnnotation(XmlType.class))!=null) {
+ if(fields==null)fields = new ArrayList<JaxInfo>();
+ for(String field : xt.propOrder()) {
+ if("".equals(field)) break; // odd bug. "" returned when no fields exist, rather than empty array
+ Field rf = cls.getDeclaredField(field);
+ Class<?> ft = rf.getType();
+
+ boolean required = false;
+ boolean nillable = false;
+ String xmlName = field;
+ String namespace = defaultNS;
+
+ XmlElement xe = rf.getAnnotation(XmlElement.class);
+ if(xe!=null) {
+ xmlName=xe.name();
+ required = xe.required();
+ nillable = false;
+ if(DEFAULT.equals(xmlName)) {
+ xmlName = field;
+ }
+ namespace = xe.namespace();
+ if(DEFAULT.equals(namespace)) {
+ namespace = defaultNS;
+ }
+ }
+ // If object is a List, then it is possible multiple, per XML/JAXB evaluation
+ if(ft.isAssignableFrom(List.class)) {
+ Type t = rf.getGenericType();
+ String classname = t.toString();
+ int start = classname.indexOf('<');
+ int end = classname.indexOf('>');
+ Class<?> genClass = Class.forName(classname.substring(start+1, end));
+ xe = genClass.getAnnotation(XmlElement.class);
+ if(xe!=null && !DEFAULT.equals(xe.namespace())) {
+ namespace = xe.namespace();
+ }
+ // add recursed recursed member, marked as array
+ fields.add(new JaxInfo(xmlName,namespace,genClass,buildFields(genClass,namespace), genClass.equals(String.class),true,required,nillable));
+ } else {
+ boolean isString = ft.equals(String.class) || ft.equals(XMLGregorianCalendar.class);
+ // add recursed member
+ fields.add(new JaxInfo(xmlName,namespace,ft,buildFields(ft,namespace),isString,false,required,nillable));
+ }
+ }
+ cls = cls.getSuperclass();
+ };
+ if(fields!=null) {
+ JaxInfo[] rv = new JaxInfo[fields.size()];
+ fields.toArray(rv);
+ return rv;
+ } else {
+ return null;
+ }
+ }
+
+
+ public StringBuilder dump(StringBuilder sb, int idx) {
+ for(int i=0;i<idx;++i)sb.append(' ');
+ sb.append("Field ");
+ sb.append(name);
+ sb.append(" [");
+ sb.append(clss.getName());
+ sb.append("] ");
+ if(isArray)sb.append(" (array)");
+ if(required)sb.append(" (required)");
+ if(nillable)sb.append(" (nillable)");
+ if(members!=null) {
+ for(JaxInfo f : members) {
+ sb.append('\n');
+ f.dump(sb,idx+2);
+ }
+ }
+ return sb;
+ }
+
+ public String toString() {
+ StringBuilder sb = new StringBuilder();
+ sb.append("Structure of ");
+ sb.append(clss.getName());
+ sb.append('\n');
+ dump(sb,2);
+ return sb.toString();
+ }
+}
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