mirror of https://github.com/apache/lucene.git
SOLR-536: Add a DocumentObjectBinder to solrj that converts Objects to and from SolrDocuments.
git-svn-id: https://svn.apache.org/repos/asf/lucene/solr/trunk@663643 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Ryan McKinley
parent
17c90ce718
commit
f2ce567269
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@ -286,6 +286,9 @@ New Features
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the global Lucene Similarity implementation.
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the global Lucene Similarity implementation.
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(ehatcher)
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(ehatcher)
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51. SOLR-536: Add a DocumentObjectBinder to solrj that converts Objects to and
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from SolrDocuments. (Noble Paul via ryan)
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Changes in runtime behavior
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Changes in runtime behavior
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1. SOLR-559: use Lucene updateDocument, deleteDocuments methods. This
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1. SOLR-559: use Lucene updateDocument, deleteDocuments methods. This
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removes the maxBufferedDeletes parameter added by SOLR-310 as Lucene
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removes the maxBufferedDeletes parameter added by SOLR-310 as Lucene
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@ -0,0 +1,256 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.solr.client.solrj.beans;
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import org.apache.solr.common.SolrDocumentList;
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import org.apache.solr.common.SolrDocument;
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import org.apache.solr.common.SolrInputDocument;
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import java.lang.reflect.AccessibleObject;
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import java.lang.reflect.Method;
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import java.lang.reflect.Array;
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import java.util.*;
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/**
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* A class to map objects to and from solr documents.
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*
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* @version $Id: ClientUtils.java 601900 2007-12-06 22:55:47Z ryan $
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* @since solr 1.3
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*/
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public class DocumentObjectBinder {
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private final Map<Class, List<DocField>> infocache =
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Collections.synchronizedMap( new HashMap<Class, List<DocField>>() );
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public DocumentObjectBinder() {
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}
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public <T> List<T> getBeans(Class<T> clazz, SolrDocumentList solrDocList) {
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List<DocField> fields = getDocFields( clazz );
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List<T> result = new ArrayList<T>(solrDocList.size());
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for(int j=0;j<solrDocList.size();j++) {
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SolrDocument sdoc = solrDocList.get(j);
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T obj = null;
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try {
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obj = clazz.newInstance();
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result.add(obj);
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} catch (Exception e) {
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throw new RuntimeException("Could not instantiate object of " + clazz,e);
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}
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for (int i = 0; i < fields.size(); i++) {
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DocField docField = fields.get(i);
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docField.inject(obj, sdoc);
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}
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}
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return result;
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}
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public SolrInputDocument toSolrInputDocument( Object obj )
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{
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List<DocField> fields = getDocFields( obj.getClass() );
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if( fields.isEmpty() ) {
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throw new RuntimeException( "class: "+obj.getClass()+" does not define any fields." );
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}
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SolrInputDocument doc = new SolrInputDocument();
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for( DocField field : fields ) {
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doc.setField( field.name, field.get( obj ), 1.0f );
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}
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return doc;
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}
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private List<DocField> getDocFields( Class clazz )
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{
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List<DocField> fields = infocache.get(clazz);
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if (fields == null) {
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synchronized(infocache) {
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infocache.put(clazz, fields = collectInfo(clazz));
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}
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}
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return fields;
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}
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private List<DocField> collectInfo(Class clazz) {
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List<DocField> fields = new ArrayList<DocField>();
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Class superClazz = clazz;
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ArrayList<AccessibleObject> members = new ArrayList<AccessibleObject>();
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while (superClazz != null && superClazz != Object.class) {
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members.addAll(Arrays.asList(superClazz.getDeclaredFields()));
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members.addAll(Arrays.asList(superClazz.getDeclaredMethods()));
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superClazz = superClazz.getSuperclass();
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}
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for (AccessibleObject member : members) {
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if (member.isAnnotationPresent(Field.class)) {
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member.setAccessible(true);
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fields.add(new DocField(member));
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}
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}
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return fields;
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}
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private static class DocField {
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private String name;
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private java.lang.reflect.Field field;
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private Method setter;
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private Method getter;
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private Class type;
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private boolean isArray = false, isList=false;
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public DocField(AccessibleObject member) {
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if (member instanceof java.lang.reflect.Field) {
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field = (java.lang.reflect.Field) member;
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} else {
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setter = (Method) member;
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}
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Field annotation = member.getAnnotation(Field.class);
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storeName(annotation);
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storeType();
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// Look for a matching getter
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if( setter != null ) {
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String gname = setter.getName();
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if( gname.startsWith("set") ) {
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gname = "get" + gname.substring(3);
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try {
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getter = setter.getDeclaringClass().getMethod( gname, (Class[])null );
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}
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catch( Exception ex ) {
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// no getter -- don't worry about it...
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if( type == Boolean.class ) {
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gname = "is" + setter.getName().substring( 3 );
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try {
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getter = setter.getDeclaringClass().getMethod( gname, (Class[])null );
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}
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catch( Exception ex2 ) {
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// no getter -- don't worry about it...
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}
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}
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}
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}
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}
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}
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private void storeName(Field annotation) {
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if (annotation.value().equals(Field.DEFAULT)) {
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if (field != null) {
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name = field.getName();
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} else {
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String setterName = setter.getName();
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if (setterName.startsWith("set") && setterName.length() > 3) {
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name = setterName.substring(3, 4).toLowerCase() + setterName.substring(4);
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} else {
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name = setter.getName();
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}
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}
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} else {
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name = annotation.value();
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}
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}
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private void storeType() {
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if (field != null) {
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type = field.getType();
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} else {
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Class[] params = setter.getParameterTypes();
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if (params.length != 1)
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throw new RuntimeException("Invalid setter method. Must have one and only one parameter");
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type = params[0];
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}
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if(type == Collection.class || type == List.class || type == ArrayList.class) {
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type = Object.class;
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isList = true;
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/*ParameterizedType parameterizedType = null;
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if(field !=null){
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if( field.getGenericType() instanceof ParameterizedType){
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parameterizedType = (ParameterizedType) field.getGenericType();
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Type[] types = parameterizedType.getActualTypeArguments();
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if (types != null && types.length > 0) type = (Class) types[0];
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}
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}*/
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} else if (type.isArray()) {
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isArray = true;
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type = type.getComponentType();
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}
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}
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public <T> void inject(T obj, SolrDocument sdoc) {
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Object val = sdoc.getFieldValue(name);
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if(val == null) return;
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if (isArray) {
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if (val instanceof List) {
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List collection = (List) val;
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set(obj, collection.toArray((Object[]) Array.newInstance(type,collection.size())));
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} else {
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set(obj, new Object[]{val});
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}
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} else if (isList) {
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if (val instanceof List) {
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set(obj, val);
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} else {
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ArrayList l = new ArrayList();
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l.add(val);
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set(obj, l);
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}
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} else {
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if (val instanceof List) {
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List l = (List) val;
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if(l.size()>0)
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set(obj, l.get(0));
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}
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else {
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set(obj,val) ;
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}
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}
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}
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private void set(Object obj, Object v) {
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try {
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if (field != null) {
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field.set(obj, v);
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} else if (setter != null) {
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setter.invoke(obj, v);
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}
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}
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catch (Exception e) {
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throw new RuntimeException("Exception while setting value : "+v+" on " + (field != null ? field : setter), e);
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}
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}
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public Object get( final Object obj )
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{
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if (field != null) {
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try {
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return field.get(obj);
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}
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catch (Exception e) {
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throw new RuntimeException("Exception while getting value: " + field, e);
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}
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}
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else if (getter == null) {
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throw new RuntimeException( "Missing getter for field: "+name+" -- You can only call the 'get' for fields that have a field of 'get' method" );
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}
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try {
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return getter.invoke( obj, (Object[])null );
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}
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catch (Exception e) {
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throw new RuntimeException("Exception while getting value: " + getter, e);
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}
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}
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}
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}
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@ -0,0 +1,35 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
|
||||||
|
* this work for additional information regarding copyright ownership.
|
||||||
|
* The ASF licenses this file to You under the Apache License, Version 2.0
|
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* (the "License"); you may not use this file except in compliance with
|
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|
* the License. You may obtain a copy of the License at
|
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|
*
|
||||||
|
* http://www.apache.org/licenses/LICENSE-2.0
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|
*
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* Unless required by applicable law or agreed to in writing, software
|
||||||
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
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|
* 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.
|
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|
*/
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package org.apache.solr.client.solrj.beans;
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import static java.lang.annotation.ElementType.*;
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import static java.lang.annotation.RetentionPolicy.RUNTIME;
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import java.lang.annotation.Target;
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import java.lang.annotation.Retention;
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/**
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* @version $Id: ClientUtils.java 601900 2007-12-06 22:55:47Z ryan $
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* @since solr 1.3
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*/
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@Target({FIELD, METHOD, TYPE})
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@Retention(RUNTIME)
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public @interface Field {
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public static final String DEFAULT ="#default";
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String value() default DEFAULT;
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}
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@ -82,6 +82,19 @@ public class ClientUtils
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}
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}
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return doc;
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return doc;
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}
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}
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/**
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* @param SolrInputDocument to convert
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* @return a SolrDocument with the same fields and values as the SolrInputDocument
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*/
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public static SolrDocument toSolrDocument( SolrInputDocument d )
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{
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SolrDocument doc = new SolrDocument();
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for( SolrInputField field : d ) {
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doc.setField( field.getName(), field.getValue() );
|
||||||
|
}
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return doc;
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}
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//------------------------------------------------------------------------
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//------------------------------------------------------------------------
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//------------------------------------------------------------------------
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//------------------------------------------------------------------------
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@ -0,0 +1,169 @@
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|
/**
|
||||||
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
||||||
|
* contributor license agreements. See the NOTICE file distributed with
|
||||||
|
* this work for additional information regarding copyright ownership.
|
||||||
|
* The ASF licenses this file to You 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.
|
||||||
|
*/
|
||||||
|
package org.apache.solr.client.solrj.beans;
|
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|
|
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|
import junit.framework.TestCase;
|
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|
|
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import org.apache.solr.client.solrj.beans.DocumentObjectBinder;
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|
import org.apache.solr.client.solrj.beans.Field;
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|
import org.apache.solr.client.solrj.impl.XMLResponseParser;
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|
import org.apache.solr.client.solrj.response.QueryResponse;
|
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import org.apache.solr.client.solrj.util.ClientUtils;
|
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|
import org.apache.solr.common.SolrDocumentList;
|
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|
import org.apache.solr.common.SolrInputDocument;
|
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|
import org.apache.solr.common.SolrInputField;
|
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|
import org.apache.solr.common.util.NamedList;
|
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|
import org.junit.Assert;
|
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|
|
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|
import java.io.StringReader;
|
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|
import java.util.Arrays;
|
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|
import java.util.Date;
|
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import java.util.List;
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|
|
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|
public class TestDocumentObjectBinder extends TestCase
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|
{
|
||||||
|
public void testSimple() throws Exception {
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|
DocumentObjectBinder binder = new DocumentObjectBinder();
|
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|
XMLResponseParser parser = new XMLResponseParser();
|
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NamedList<Object> nl = null;
|
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nl = parser.processResponse(new StringReader(xml));
|
||||||
|
QueryResponse res = new QueryResponse(nl);
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|
SolrDocumentList solDocList = res.getResults();
|
||||||
|
List<Item> l = binder.getBeans(Item.class,res.getResults());
|
||||||
|
Assert.assertEquals(solDocList.size(), l.size());
|
||||||
|
Assert.assertEquals(solDocList.get(0).getFieldValue("features"), l.get(0).features);
|
||||||
|
|
||||||
|
Item item = new Item();
|
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|
item.id = "aaa";
|
||||||
|
item.categories = new String[] { "aaa", "bbb", "ccc" };
|
||||||
|
SolrInputDocument out = binder.toSolrInputDocument( item );
|
||||||
|
|
||||||
|
Assert.assertEquals( item.id, out.getFieldValue( "id" ) );
|
||||||
|
SolrInputField catfield = out.getField( "cat" );
|
||||||
|
Assert.assertEquals( 3, catfield.getValueCount() );
|
||||||
|
Assert.assertEquals( "[aaa, bbb, ccc]", catfield.getValue().toString() );
|
||||||
|
|
||||||
|
// Test the error on not settable stuff...
|
||||||
|
NotGettableItem ng = new NotGettableItem();
|
||||||
|
ng.setInStock( false );
|
||||||
|
try {
|
||||||
|
out = binder.toSolrInputDocument( ng );
|
||||||
|
Assert.fail( "Should throw an error" );
|
||||||
|
}
|
||||||
|
catch( RuntimeException ex ) {
|
||||||
|
// ok -- this should happen...
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
public void testToAndFromSolrDocument()
|
||||||
|
{
|
||||||
|
Item item = new Item();
|
||||||
|
item.id = "one";
|
||||||
|
item.inStock = false;
|
||||||
|
item.categories = new String[] { "aaa", "bbb", "ccc" };
|
||||||
|
item.features = Arrays.asList( item.categories );
|
||||||
|
|
||||||
|
DocumentObjectBinder binder = new DocumentObjectBinder();
|
||||||
|
SolrInputDocument doc = binder.toSolrInputDocument( item );
|
||||||
|
SolrDocumentList docs = new SolrDocumentList();
|
||||||
|
docs.add( ClientUtils.toSolrDocument(doc) );
|
||||||
|
Item out = binder.getBeans( Item.class, docs ).get( 0 );
|
||||||
|
|
||||||
|
// make sure it came out the same
|
||||||
|
Assert.assertEquals( item.id, out.id );
|
||||||
|
Assert.assertEquals( item.inStock, out.inStock );
|
||||||
|
Assert.assertEquals( item.categories.length, out.categories.length );
|
||||||
|
Assert.assertEquals( item.features, out.features );
|
||||||
|
}
|
||||||
|
|
||||||
|
public static class Item {
|
||||||
|
@Field
|
||||||
|
String id;
|
||||||
|
|
||||||
|
@Field("cat")
|
||||||
|
String[] categories;
|
||||||
|
|
||||||
|
@Field
|
||||||
|
List<String> features;
|
||||||
|
|
||||||
|
@Field
|
||||||
|
Date timestamp;
|
||||||
|
|
||||||
|
@Field("highway_mileage")
|
||||||
|
int mwyMileage;
|
||||||
|
|
||||||
|
boolean inStock = false;
|
||||||
|
|
||||||
|
@Field
|
||||||
|
public void setInStock(Boolean b) {
|
||||||
|
inStock = b;
|
||||||
|
}
|
||||||
|
|
||||||
|
// required if you want to fill SolrDocuments with the same annotaion...
|
||||||
|
public boolean isInStock()
|
||||||
|
{
|
||||||
|
return inStock;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
public static class NotGettableItem {
|
||||||
|
@Field
|
||||||
|
String id;
|
||||||
|
|
||||||
|
private boolean inStock;
|
||||||
|
private String aaa;
|
||||||
|
|
||||||
|
@Field
|
||||||
|
public void setInStock(Boolean b) {
|
||||||
|
inStock = b;
|
||||||
|
}
|
||||||
|
|
||||||
|
public String getAaa() {
|
||||||
|
return aaa;
|
||||||
|
}
|
||||||
|
|
||||||
|
@Field
|
||||||
|
public void setAaa(String aaa) {
|
||||||
|
this.aaa = aaa;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
public static final String xml =
|
||||||
|
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
|
||||||
|
"<response>" +
|
||||||
|
"<lst name=\"responseHeader\"><int name=\"status\">0</int><int name=\"QTime\">0</int><lst name=\"params\"><str name=\"start\">0</str><str name=\"q\">*:*\n" +
|
||||||
|
"</str><str name=\"version\">2.2</str><str name=\"rows\">4</str></lst></lst><result name=\"response\" numFound=\"26\" start=\"0\"><doc><arr name=\"cat\">" +
|
||||||
|
"<str>electronics</str><str>hard drive</str></arr><arr name=\"features\"><str>7200RPM, 8MB cache, IDE Ultra ATA-133</str>" +
|
||||||
|
"<str>NoiseGuard, SilentSeek technology, Fluid Dynamic Bearing (FDB) motor</str></arr><str name=\"id\">SP2514N</str>" +
|
||||||
|
"<bool name=\"inStock\">true</bool><str name=\"manu\">Samsung Electronics Co. Ltd.</str><str name=\"name\">Samsung SpinPoint P120 SP2514N - hard drive - 250 GB - ATA-133</str>" +
|
||||||
|
"<int name=\"popularity\">6</int><float name=\"price\">92.0</float><str name=\"sku\">SP2514N</str><date name=\"timestamp\">2008-04-16T10:35:57.078Z</date></doc>" +
|
||||||
|
"<doc><arr name=\"cat\"><str>electronics</str><str>hard drive</str></arr><arr name=\"features\"><str>SATA 3.0Gb/s, NCQ</str><str>8.5ms seek</str>" +
|
||||||
|
"<str>16MB cache</str></arr><str name=\"id\">6H500F0</str><bool name=\"inStock\">true</bool><str name=\"manu\">Maxtor Corp.</str>" +
|
||||||
|
"<str name=\"name\">Maxtor DiamondMax 11 - hard drive - 500 GB - SATA-300</str><int name=\"popularity\">6</int><float name=\"price\">350.0</float>" +
|
||||||
|
"<str name=\"sku\">6H500F0</str><date name=\"timestamp\">2008-04-16T10:35:57.109Z</date></doc><doc><arr name=\"cat\"><str>electronics</str>" +
|
||||||
|
"<str>connector</str></arr><arr name=\"features\"><str>car power adapter, white</str></arr><str name=\"id\">F8V7067-APL-KIT</str>" +
|
||||||
|
"<bool name=\"inStock\">false</bool><str name=\"manu\">Belkin</str><str name=\"name\">Belkin Mobile Power Cord for iPod w/ Dock</str>" +
|
||||||
|
"<int name=\"popularity\">1</int><float name=\"price\">19.95</float><str name=\"sku\">F8V7067-APL-KIT</str>" +
|
||||||
|
"<date name=\"timestamp\">2008-04-16T10:35:57.140Z</date><float name=\"weight\">4.0</float></doc><doc>" +
|
||||||
|
"<arr name=\"cat\"><str>electronics</str><str>connector</str></arr><arr name=\"features\">" +
|
||||||
|
"<str>car power adapter for iPod, white</str></arr><str name=\"id\">IW-02</str><bool name=\"inStock\">false</bool>" +
|
||||||
|
"<str name=\"manu\">Belkin</str><str name=\"name\">iPod & iPod Mini USB 2.0 Cable</str>" +
|
||||||
|
"<int name=\"popularity\">1</int><float name=\"price\">11.5</float><str name=\"sku\">IW-02</str>" +
|
||||||
|
"<date name=\"timestamp\">2008-04-16T10:35:57.140Z</date><float name=\"weight\">2.0</float></doc></result>\n" +
|
||||||
|
"</response>";
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue