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Apache Solr Solrj for jdk 1.5
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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.util;
import org.apache.solr.common.SolrDocument;
import org.apache.solr.common.SolrInputDocument;
import org.apache.solr.common.SolrInputField;
import org.apache.solr.common.cloud.Slice;
import org.apache.solr.common.params.SolrParams;
import org.apache.solr.common.util.Base64;
import org.apache.solr.common.util.ContentStream;
import org.apache.solr.common.util.ContentStreamBase;
import org.apache.solr.common.util.DateUtil;
import org.apache.solr.common.util.XML;
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import java.net.URLEncoder;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
/**
*
* @since solr 1.3
*/
public class ClientUtils
{
// Standard Content types
public static final String TEXT_XML = "application/xml; charset=UTF-8";
/**
* Take a string and make it an iterable ContentStream
*/
public static Collection toContentStreams( final String str, final String contentType )
{
if( str == null )
return null;
ArrayList streams = new ArrayList<>( 1 );
ContentStreamBase ccc = new ContentStreamBase.StringStream( str );
ccc.setContentType( contentType );
streams.add( ccc );
return streams;
}
/**
* @param d SolrDocument to convert
* @return a SolrInputDocument with the same fields and values as the
* SolrDocument. All boosts are 1.0f
*/
public static SolrInputDocument toSolrInputDocument( SolrDocument d )
{
SolrInputDocument doc = new SolrInputDocument();
for( String name : d.getFieldNames() ) {
doc.addField( name, d.getFieldValue(name), 1.0f );
}
return doc;
}
/**
* @param d SolrInputDocument to convert
* @return a SolrDocument with the same fields and values as the SolrInputDocument
*/
public static SolrDocument toSolrDocument(SolrInputDocument d) {
SolrDocument doc = new SolrDocument();
for (SolrInputField field : d) {
doc.setField(field.getName(), field.getValue());
}
if (d.getChildDocuments() != null) {
for (SolrInputDocument in : d.getChildDocuments()) {
doc.addChildDocument(toSolrDocument(in));
}
}
return doc;
}
//------------------------------------------------------------------------
//------------------------------------------------------------------------
public static void writeXML( SolrInputDocument doc, Writer writer ) throws IOException
{
writer.write("");
for( SolrInputField field : doc ) {
float boost = field.getBoost();
String name = field.getName();
for( Object v : field ) {
String update = null;
if (v instanceof Map) {
// currently only supports a single value
for (Entry entry : ((Map)v).entrySet()) {
update = entry.getKey().toString();
v = entry.getValue();
if (v instanceof Collection) {
Collection values = (Collection) v;
for (Object value : values) {
writeVal(writer, boost, name, value, update);
boost = 1.0f;
}
} else {
writeVal(writer, boost, name, v, update);
boost = 1.0f;
}
}
} else {
writeVal(writer, boost, name, v, update);
// only write the boost for the first multi-valued field
// otherwise, the used boost is the product of all the boost values
boost = 1.0f;
}
}
}
if (doc.hasChildDocuments()) {
for (SolrInputDocument childDocument : doc.getChildDocuments()) {
writeXML(childDocument, writer);
}
}
writer.write(" ");
}
private static void writeVal(Writer writer, float boost, String name, Object v, String update) throws IOException {
if (v instanceof Date) {
v = DateUtil.getThreadLocalDateFormat().format( (Date)v );
} else if (v instanceof byte[]) {
byte[] bytes = (byte[]) v;
v = Base64.byteArrayToBase64(bytes, 0, bytes.length);
} else if (v instanceof ByteBuffer) {
ByteBuffer bytes = (ByteBuffer) v;
v = Base64.byteArrayToBase64(bytes.array(), bytes.position(),bytes.limit() - bytes.position());
}
if (update == null) {
if( boost != 1.0f ) {
XML.writeXML(writer, "field", v.toString(), "name", name, "boost", boost);
} else if (v != null) {
XML.writeXML(writer, "field", v.toString(), "name", name );
}
} else {
if( boost != 1.0f ) {
XML.writeXML(writer, "field", v.toString(), "name", name, "boost", boost, "update", update);
} else {
if (v == null) {
XML.writeXML(writer, "field", null, "name", name, "update", update, "null", true);
} else {
XML.writeXML(writer, "field", v.toString(), "name", name, "update", update);
}
}
}
}
public static String toXML( SolrInputDocument doc )
{
StringWriter str = new StringWriter();
try {
writeXML( doc, str );
}
catch( Exception ex ){}
return str.toString();
}
//---------------------------------------------------------------------------------------
/**
* See: Lucene query parser syntax
* for more information on Escaping Special Characters
*/
// NOTE: its broken to link to any lucene-queryparser.jar docs, not in classpath!!!!!
public static String escapeQueryChars(String s) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
// These characters are part of the query syntax and must be escaped
if (c == '\\' || c == '+' || c == '-' || c == '!' || c == '(' || c == ')' || c == ':'
|| c == '^' || c == '[' || c == ']' || c == '\"' || c == '{' || c == '}' || c == '~'
|| c == '*' || c == '?' || c == '|' || c == '&' || c == ';' || c == '/'
|| Character.isWhitespace(c)) {
sb.append('\\');
}
sb.append(c);
}
return sb.toString();
}
public static String toQueryString( SolrParams params, boolean xml ) {
StringBuilder sb = new StringBuilder(128);
try {
String amp = xml ? "&" : "&";
boolean first=true;
Iterator names = params.getParameterNamesIterator();
while( names.hasNext() ) {
String key = names.next();
String[] valarr = params.getParams( key );
if( valarr == null ) {
sb.append( first?"?":amp );
sb.append(key);
first=false;
}
else {
for (String val : valarr) {
sb.append( first? "?":amp );
sb.append(key);
if( val != null ) {
sb.append('=');
sb.append( URLEncoder.encode( val, "UTF-8" ) );
}
first=false;
}
}
}
}
catch (IOException e) {throw new RuntimeException(e);} // can't happen
return sb.toString();
}
/** Constructs a slices map from a collection of slices and handles disambiguation if multiple collections are being queried simultaneously */
public static void addSlices(Map target, String collectionName, Collection slices, boolean multiCollection) {
for (Slice slice : slices) {
String key = slice.getName();
if (multiCollection) key = collectionName + "_" + key;
target.put(key, slice);
}
}
}