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Query DSL: indices filter type, closes #1787.

This commit is contained in:
Shay Banon 2012-03-17 13:24:15 +02:00
parent 42541f7354
commit 6046e7c6eb
6 changed files with 280 additions and 0 deletions
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63
src/main/java/org/elasticsearch/common/lucene/search/MatchNoDocsFilter.java Normal file
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@ -0,0 +1,63 @@
/*
* 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.common.lucene.search;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.search.DocIdSet;
import org.apache.lucene.search.Filter;
import java.io.IOException;
/**
* A filter that matches no docs.
*/
public class MatchNoDocsFilter extends Filter {
@Override
public DocIdSet getDocIdSet(IndexReader reader) throws IOException {
return null;
}
@Override
public int hashCode() {
return this.getClass().hashCode();
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null) {
return false;
}
if (obj.getClass() == this.getClass()) {
return true;
}
return false;
}
@Override
public String toString() {
return "MatchNoDocsFilter";
}
}

1
src/main/java/org/elasticsearch/common/lucene/search/Queries.java
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@ -38,6 +38,7 @@ public class Queries {
* A match all docs filter. Note, requires no caching!.
*/
public final static Filter MATCH_ALL_FILTER = new MatchAllDocsFilter();
public final static Filter MATCH_NO_FILTER = new MatchNoDocsFilter();
private final static Field disjuncts;

4
src/main/java/org/elasticsearch/index/query/FilterBuilders.java
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@ -383,6 +383,10 @@ public abstract class FilterBuilders {
return new NotFilterBuilder(filter);
}
public static IndicesFilterBuilder indicesFilter(FilterBuilder filter, String... indices) {
return new IndicesFilterBuilder(filter, indices);
}
private FilterBuilders() {
}

89
src/main/java/org/elasticsearch/index/query/IndicesFilterBuilder.java Normal file
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@ -0,0 +1,89 @@
/*
* 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.query;
import org.elasticsearch.common.xcontent.XContentBuilder;
import java.io.IOException;
/**
* A filter that will execute the wrapped filter only for the specified indices, and "match_all" when
* it does not match those indices (by default).
*/
public class IndicesFilterBuilder extends BaseFilterBuilder {
private final FilterBuilder filterBuilder;
private final String[] indices;
private String sNoMatchFilter;
private FilterBuilder noMatchFilter;
private String filterName;
public IndicesFilterBuilder(FilterBuilder filterBuilder, String... indices) {
this.filterBuilder = filterBuilder;
this.indices = indices;
}
/**
* Sets the no match filter, can either be <tt>all</tt> or <tt>none</tt>.
*/
public IndicesFilterBuilder noMatchFilter(String type) {
this.sNoMatchFilter = type;
return this;
}
/**
* Sets the filter to use when it executes on an index that does not match the indices provided.
*/
public IndicesFilterBuilder noMatchFilter(FilterBuilder noMatchFilter) {
this.noMatchFilter = noMatchFilter;
return this;
}
/**
* Sets the filter name for the filter that can be used when searching for matched_filters per hit.
*/
public IndicesFilterBuilder filterName(String filterName) {
this.filterName = filterName;
return this;
}
@Override
protected void doXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject(IndicesFilterParser.NAME);
builder.field("filter");
filterBuilder.toXContent(builder, params);
builder.field("indices", indices);
if (noMatchFilter != null) {
builder.field("no_match_filter");
noMatchFilter.toXContent(builder, params);
} else if (sNoMatchFilter != null) {
builder.field("no_match_filter", sNoMatchFilter);
}
if (filterName != null) {
builder.field("_name", filterName);
}
builder.endObject();
}
}

122
src/main/java/org/elasticsearch/index/query/IndicesFilterParser.java Normal file
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@ -0,0 +1,122 @@
/*
* 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.query;
import com.google.common.collect.Sets;
import org.apache.lucene.search.Filter;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.lucene.search.Queries;
import org.elasticsearch.common.regex.Regex;
import org.elasticsearch.common.xcontent.XContentParser;
import java.io.IOException;
import java.util.Set;
/**
*/
public class IndicesFilterParser implements FilterParser {
public static final String NAME = "indices";
@Nullable
private final ClusterService clusterService;
@Inject
public IndicesFilterParser(@Nullable ClusterService clusterService) {
this.clusterService = clusterService;
}
@Override
public String[] names() {
return new String[]{NAME};
}
@Override
public Filter parse(QueryParseContext parseContext) throws IOException, QueryParsingException {
XContentParser parser = parseContext.parser();
Filter filter = null;
Set<String> indices = Sets.newHashSet();
String currentFieldName = null;
XContentParser.Token token;
Filter noMatchFilter = Queries.MATCH_ALL_FILTER;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_OBJECT) {
if ("filter".equals(currentFieldName)) {
filter = parseContext.parseInnerFilter();
} else if ("no_match_filter".equals(currentFieldName)) {
noMatchFilter = parseContext.parseInnerFilter();
} else {
throw new QueryParsingException(parseContext.index(), "[indices] filter does not support [" + currentFieldName + "]");
}
} else if (token == XContentParser.Token.START_ARRAY) {
if ("indices".equals(currentFieldName)) {
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
String value = parser.textOrNull();
if (value == null) {
throw new QueryParsingException(parseContext.index(), "No value specified for term filter");
}
indices.add(value);
}
} else {
throw new QueryParsingException(parseContext.index(), "[indices] filter does not support [" + currentFieldName + "]");
}
} else if (token.isValue()) {
if ("index".equals(currentFieldName)) {
indices.add(parser.text());
} else if ("no_match_filter".equals(currentFieldName)) {
String type = parser.text();
if ("all".equals(type)) {
noMatchFilter = Queries.MATCH_ALL_FILTER;
} else if ("none".equals(type)) {
noMatchFilter = Queries.MATCH_NO_FILTER;
}
} else {
throw new QueryParsingException(parseContext.index(), "[indices] filter does not support [" + currentFieldName + "]");
}
}
}
if (filter == null) {
throw new QueryParsingException(parseContext.index(), "[indices] requires 'filter' element");
}
if (indices.isEmpty()) {
throw new QueryParsingException(parseContext.index(), "[indices] requires 'indices' element");
}
String[] concreteIndices = indices.toArray(new String[indices.size()]);
if (clusterService != null) {
MetaData metaData = clusterService.state().metaData();
concreteIndices = metaData.concreteIndices(indices.toArray(new String[indices.size()]), true, true);
}
for (String index : concreteIndices) {
if (Regex.simpleMatch(index, parseContext.index().name())) {
return filter;
}
}
return noMatchFilter;
}
}

1
src/main/java/org/elasticsearch/indices/query/IndicesQueriesRegistry.java
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@ -100,6 +100,7 @@ public class IndicesQueriesRegistry {
addFilterParser(filterParsers, new MatchAllFilterParser());
addFilterParser(filterParsers, new ExistsFilterParser());
addFilterParser(filterParsers, new MissingFilterParser());
addFilterParser(filterParsers, new IndicesFilterParser(clusterService));
this.filterParsers = ImmutableMap.copyOf(filterParsers);
}