/*
* Licensed to ElasticSearch and Shay Banon 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.index.mapper.core;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.Fieldable;
import org.apache.lucene.index.FieldInfo.IndexOptions;
import org.apache.lucene.search.Filter;
import org.elasticsearch.common.Booleans;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.lucene.Lucene;
import org.elasticsearch.common.lucene.search.TermFilter;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.index.mapper.Mapper;
import org.elasticsearch.index.mapper.MapperParsingException;
import org.elasticsearch.index.mapper.ParseContext;
import java.io.IOException;
import java.util.Map;
import static org.elasticsearch.common.xcontent.support.XContentMapValues.nodeBooleanValue;
import static org.elasticsearch.index.mapper.MapperBuilders.booleanField;
import static org.elasticsearch.index.mapper.core.TypeParsers.parseField;
/**
*
*/
// TODO this can be made better, maybe storing a byte for it?
public class BooleanFieldMapper extends AbstractFieldMapper<Boolean> {
public static final String CONTENT_TYPE = "boolean";
public static class Defaults extends AbstractFieldMapper.Defaults {
public static final boolean OMIT_NORMS = true;
public static final Boolean NULL_VALUE = null;
}
public static class Builder extends AbstractFieldMapper.Builder<Builder, BooleanFieldMapper> {
private Boolean nullValue = Defaults.NULL_VALUE;
public Builder(String name) {
super(name);
this.omitNorms = Defaults.OMIT_NORMS;
this.builder = this;
}
public Builder nullValue(boolean nullValue) {
this.nullValue = nullValue;
return this;
}
@Override
public Builder index(Field.Index index) {
return super.index(index);
}
@Override
public Builder store(Field.Store store) {
return super.store(store);
}
@Override
public Builder termVector(Field.TermVector termVector) {
return super.termVector(termVector);
}
@Override
public Builder boost(float boost) {
return super.boost(boost);
}
@Override
public Builder indexName(String indexName) {
return super.indexName(indexName);
}
@Override
public BooleanFieldMapper build(BuilderContext context) {
return new BooleanFieldMapper(buildNames(context), index, store,
termVector, boost, omitNorms, indexOptions, nullValue);
}
}
public static class TypeParser implements Mapper.TypeParser {
@Override
public Mapper.Builder parse(String name, Map<String, Object> node, ParserContext parserContext) throws MapperParsingException {
BooleanFieldMapper.Builder builder = booleanField(name);
parseField(builder, name, node, parserContext);
for (Map.Entry<String, Object> entry : node.entrySet()) {
String propName = Strings.toUnderscoreCase(entry.getKey());
Object propNode = entry.getValue();
if (propName.equals("null_value")) {
builder.nullValue(nodeBooleanValue(propNode));
}
}
return builder;
}
}
private Boolean nullValue;
protected BooleanFieldMapper(Names names, Field.Index index, Field.Store store, Field.TermVector termVector,
float boost, boolean omitNorms, IndexOptions indexOptions, Boolean nullValue) {
super(names, index, store, termVector, boost, omitNorms, indexOptions, Lucene.KEYWORD_ANALYZER, Lucene.KEYWORD_ANALYZER);
this.nullValue = nullValue;
}
@Override
public boolean useFieldQueryWithQueryString() {
return true;
}
@Override
public Boolean value(Fieldable field) {
return field.stringValue().charAt(0) == 'T' ? Boolean.TRUE : Boolean.FALSE;
}
@Override
public Boolean valueFromString(String value) {
return value.charAt(0) == 'T' ? Boolean.TRUE : Boolean.FALSE;
}
@Override
public String valueAsString(Fieldable field) {
return field.stringValue().charAt(0) == 'T' ? "true" : "false";
}
@Override
public String indexedValue(String value) {
if (value == null || value.length() == 0) {
return "F";
}
if (value.length() == 1 && value.charAt(0) == 'F') {
return "F";
}
if (Booleans.parseBoolean(value, false)) {
return "T";
}
return "F";
}
@Override
public Filter nullValueFilter() {
if (nullValue == null) {
return null;
}
return new TermFilter(names().createIndexNameTerm(nullValue ? "T" : "F"));
}
@Override
protected Field parseCreateField(ParseContext context) throws IOException {
if (!indexed() && !stored()) {
return null;
}
XContentParser.Token token = context.parser().currentToken();
String value = null;
if (token == XContentParser.Token.VALUE_NULL) {
if (nullValue != null) {
value = nullValue ? "T" : "F";
}
} else {
value = context.parser().booleanValue() ? "T" : "F";
}
if (value == null) {
return null;
}
return new Field(names.indexName(), value, store, index, termVector);
}
@Override
protected String contentType() {
return CONTENT_TYPE;
}
@Override
protected void doXContentBody(XContentBuilder builder) throws IOException {
super.doXContentBody(builder);
if (index != Defaults.INDEX) {
builder.field("index", index.name().toLowerCase());
}
if (store != Defaults.STORE) {
builder.field("store", store.name().toLowerCase());
}
if (termVector != Defaults.TERM_VECTOR) {
builder.field("term_vector", termVector.name().toLowerCase());
}
if (omitNorms != Defaults.OMIT_NORMS) {
builder.field("omit_norms", omitNorms);
}
if (indexOptions != Defaults.INDEX_OPTIONS) {
builder.field("index_options", indexOptionToString(indexOptions));
}
if (nullValue != null) {
builder.field("null_value", nullValue);
}
}
}