/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.search.fetch.script;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.script.ScriptParameterParser;
import org.elasticsearch.script.ScriptParameterParser.ScriptParameterValue;
import org.elasticsearch.script.ScriptService;
import org.elasticsearch.script.SearchScript;
import org.elasticsearch.search.SearchParseElement;
import org.elasticsearch.search.internal.SearchContext;
import java.util.Map;
/**
* <pre>
* "script_fields" : {
* "test1" : {
* "script" : "doc['field_name'].value"
* },
* "test2" : {
* "script" : "..."
* }
* }
* </pre>
*
*
*/
public class ScriptFieldsParseElement implements SearchParseElement {
@Override
public void parse(XContentParser parser, SearchContext context) throws Exception {
XContentParser.Token token;
String currentFieldName = null;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_OBJECT) {
String fieldName = currentFieldName;
ScriptParameterParser scriptParameterParser = new ScriptParameterParser();
String script = null;
String scriptLang = null;
ScriptService.ScriptType scriptType = null;
Map<String, Object> params = null;
boolean ignoreException = false;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_OBJECT) {
params = parser.map();
} else if (token.isValue()) {
if ("ignore_failure".equals(currentFieldName)) {
ignoreException = parser.booleanValue();
} else {
scriptParameterParser.token(currentFieldName, token, parser);
}
}
}
ScriptParameterValue scriptValue = scriptParameterParser.getDefaultScriptParameterValue();
if (scriptValue != null) {
script = scriptValue.script();
scriptType = scriptValue.scriptType();
}
scriptLang = scriptParameterParser.lang();
SearchScript searchScript = context.scriptService().search(context.lookup(), scriptLang, script, scriptType, params);
context.scriptFields().add(new ScriptFieldsContext.ScriptField(fieldName, searchScript, ignoreException));
}
}
}
}