/*
* 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.action.search;
import static org.elasticsearch.search.Scroll.readScroll;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Map;
import org.apache.cassandra.dht.Range;
import org.apache.cassandra.dht.Token;
import org.elasticsearch.ElasticsearchGenerationException;
import org.elasticsearch.action.ActionRequest;
import org.elasticsearch.action.ActionRequestValidationException;
import org.elasticsearch.action.IndicesRequest;
import org.elasticsearch.action.support.IndicesOptions;
import org.elasticsearch.client.Requests;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.ParseFieldMatcher;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.bytes.BytesArray;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.script.ScriptService;
import org.elasticsearch.script.ScriptService.ScriptType;
import org.elasticsearch.script.Template;
import org.elasticsearch.script.mustache.MustacheScriptEngineService;
import org.elasticsearch.search.Scroll;
import org.elasticsearch.search.builder.SearchSourceBuilder;
/**
* A request to execute search against one or more indices (or all). Best created using
* {@link org.elasticsearch.client.Requests#searchRequest(String...)}.
* <p/>
* <p>Note, the search {@link #source(org.elasticsearch.search.builder.SearchSourceBuilder)}
* is required. The search source is the different search options, including aggregations and such.
* <p/>
* <p>There is an option to specify an addition search source using the {@link #extraSource(org.elasticsearch.search.builder.SearchSourceBuilder)}.
*
* @see org.elasticsearch.client.Requests#searchRequest(String...)
* @see org.elasticsearch.client.Client#search(SearchRequest)
* @see SearchResponse
*/
public class SearchRequest extends ActionRequest<SearchRequest> implements IndicesRequest.Replaceable {
private SearchType searchType = SearchType.DEFAULT;
private String[] indices;
@Nullable
private String routing;
@Nullable
private String preference;
private BytesReference templateSource;
private Template template;
private BytesReference source;
private BytesReference extraSource;
private Boolean requestCache;
private Boolean tokenRangesBitsetCache;
private Collection<Range<Token>> tokenRanges;
private Scroll scroll;
private String[] types = Strings.EMPTY_ARRAY;
public static final IndicesOptions DEFAULT_INDICES_OPTIONS = IndicesOptions.strictExpandOpenAndForbidClosed();
private IndicesOptions indicesOptions = DEFAULT_INDICES_OPTIONS;
public SearchRequest() {
}
/**
* Copy constructor that creates a new search request that is a copy of the one provided as an argument.
* The new request will inherit though headers and context from the original request that caused it.
*/
public SearchRequest(SearchRequest searchRequest, ActionRequest originalRequest) {
super(originalRequest);
this.searchType = searchRequest.searchType;
this.indices = searchRequest.indices;
this.routing = searchRequest.routing;
this.preference = searchRequest.preference;
this.templateSource = searchRequest.templateSource;
this.template = searchRequest.template;
this.source = searchRequest.source;
this.extraSource = searchRequest.extraSource;
this.requestCache = searchRequest.requestCache;
this.scroll = searchRequest.scroll;
this.types = searchRequest.types;
this.indicesOptions = searchRequest.indicesOptions;
this.tokenRangesBitsetCache = searchRequest.tokenRangesBitsetCache;
this.tokenRanges = searchRequest.tokenRanges;
}
/**
* Constructs a new search request starting from the provided request, meaning that it will
* inherit its headers and context
*/
public SearchRequest(ActionRequest request) {
super(request);
}
/**
* Constructs a new search request against the indices. No indices provided here means that search
* will run against all indices.
*/
public SearchRequest(String... indices) {
indices(indices);
}
/**
* Constructs a new search request against the provided indices with the given search source.
*/
public SearchRequest(String[] indices, byte[] source) {
indices(indices);
this.source = new BytesArray(source);
}
@Override
public ActionRequestValidationException validate() {
ActionRequestValidationException validationException = null;
// no need to check, we resolve to match all query
// if (source == null && extraSource == null) {
// validationException = addValidationError("search source is missing", validationException);
// }
return validationException;
}
/**
* Sets the indices the search will be executed on.
*/
@Override
public SearchRequest indices(String... indices) {
if (indices == null) {
throw new IllegalArgumentException("indices must not be null");
} else {
for (int i = 0; i < indices.length; i++) {
if (indices[i] == null) {
throw new IllegalArgumentException("indices[" + i + "] must not be null");
}
}
}
this.indices = indices;
return this;
}
@Override
public IndicesOptions indicesOptions() {
return indicesOptions;
}
public SearchRequest indicesOptions(IndicesOptions indicesOptions) {
this.indicesOptions = indicesOptions;
return this;
}
/**
* The document types to execute the search against. Defaults to be executed against
* all types.
*/
public String[] types() {
return types;
}
/**
* The document types to execute the search against. Defaults to be executed against
* all types.
*/
public SearchRequest types(String... types) {
this.types = types;
return this;
}
/**
* A comma separated list of routing values to control the shards the search will be executed on.
*/
public String routing() {
return this.routing;
}
/**
* A comma separated list of routing values to control the shards the search will be executed on.
*/
public SearchRequest routing(String routing) {
this.routing = routing;
return this;
}
/**
* The routing values to control the shards that the search will be executed on.
*/
public SearchRequest routing(String... routings) {
this.routing = Strings.arrayToCommaDelimitedString(routings);
return this;
}
/**
* Sets the preference to execute the search. Defaults to randomize across shards. Can be set to
* <tt>_local</tt> to prefer local shards, <tt>_primary</tt> to execute only on primary shards, or
* a custom value, which guarantees that the same order will be used across different requests.
*/
public SearchRequest preference(String preference) {
this.preference = preference;
return this;
}
public String preference() {
return this.preference;
}
/**
* The search type to execute, defaults to {@link SearchType#DEFAULT}.
*/
public SearchRequest searchType(SearchType searchType) {
this.searchType = searchType;
return this;
}
/**
* The a string representation search type to execute, defaults to {@link SearchType#DEFAULT}. Can be
* one of "dfs_query_then_fetch"/"dfsQueryThenFetch", "dfs_query_and_fetch"/"dfsQueryAndFetch",
* "query_then_fetch"/"queryThenFetch", and "query_and_fetch"/"queryAndFetch".
*/
public SearchRequest searchType(String searchType) {
return searchType(SearchType.fromString(searchType, ParseFieldMatcher.EMPTY));
}
/**
* The source of the search request.
*/
public SearchRequest source(SearchSourceBuilder sourceBuilder) {
this.source = sourceBuilder.buildAsBytes(Requests.CONTENT_TYPE);
return this;
}
/**
* The source of the search request. Consider using either {@link #source(byte[])} or
* {@link #source(org.elasticsearch.search.builder.SearchSourceBuilder)}.
*/
public SearchRequest source(String source) {
this.source = new BytesArray(source);
return this;
}
/**
* The source of the search request in the form of a map.
*/
public SearchRequest source(Map source) {
try {
XContentBuilder builder = XContentFactory.contentBuilder(Requests.CONTENT_TYPE);
builder.map(source);
return source(builder);
} catch (IOException e) {
throw new ElasticsearchGenerationException("Failed to generate [" + source + "]", e);
}
}
public SearchRequest source(XContentBuilder builder) {
this.source = builder.bytes();
return this;
}
/**
* The search source to execute.
*/
public SearchRequest source(byte[] source) {
return source(source, 0, source.length);
}
/**
* The search source to execute.
*/
public SearchRequest source(byte[] source, int offset, int length) {
return source(new BytesArray(source, offset, length));
}
/**
* The search source to execute.
*/
public SearchRequest source(BytesReference source) {
this.source = source;
return this;
}
/**
* The search source to execute.
*/
public BytesReference source() {
return source;
}
/**
* The search source template to execute.
*/
public BytesReference templateSource() {
return templateSource;
}
/**
* Allows to provide additional source that will be used as well.
*/
public SearchRequest extraSource(SearchSourceBuilder sourceBuilder) {
if (sourceBuilder == null) {
extraSource = null;
return this;
}
this.extraSource = sourceBuilder.buildAsBytes(Requests.CONTENT_TYPE);
return this;
}
public SearchRequest extraSource(Map extraSource) {
try {
XContentBuilder builder = XContentFactory.contentBuilder(Requests.CONTENT_TYPE);
builder.map(extraSource);
return extraSource(builder);
} catch (IOException e) {
throw new ElasticsearchGenerationException("Failed to generate [" + extraSource + "]", e);
}
}
public SearchRequest extraSource(XContentBuilder builder) {
this.extraSource = builder.bytes();
return this;
}
/**
* Allows to provide additional source that will use used as well.
*/
public SearchRequest extraSource(String source) {
this.extraSource = new BytesArray(source);
return this;
}
/**
* Allows to provide additional source that will be used as well.
*/
public SearchRequest extraSource(byte[] source) {
return extraSource(source, 0, source.length);
}
/**
* Allows to provide additional source that will be used as well.
*/
public SearchRequest extraSource(byte[] source, int offset, int length) {
return extraSource(new BytesArray(source, offset, length));
}
/**
* Allows to provide additional source that will be used as well.
*/
public SearchRequest extraSource(BytesReference source) {
this.extraSource = source;
return this;
}
/**
* Allows to provide template as source.
*/
public SearchRequest templateSource(BytesReference template) {
this.templateSource = template;
return this;
}
/**
* The template of the search request.
*/
public SearchRequest templateSource(String template) {
this.templateSource = new BytesArray(template);
return this;
}
/**
* The stored template
*/
public void template(Template template) {
this.template = template;
}
/**
* The stored template
*/
public Template template() {
return template;
}
/**
* The name of the stored template
*
* @deprecated use {@link #template(Template)} instead.
*/
@Deprecated
public void templateName(String templateName) {
updateOrCreateScript(templateName, null, null, null);
}
public Collection<Range<Token>> tokenRanges() {
return tokenRanges;
}
public SearchRequest tokenRanges(Collection<Range<Token>> tokenRanges) {
this.tokenRanges = tokenRanges;
return this;
}
/**
* The type of the stored template
*
* @deprecated use {@link #template(Template)} instead.
*/
@Deprecated
public void templateType(ScriptService.ScriptType templateType) {
updateOrCreateScript(null, templateType, null, null);
}
/**
* Template parameters used for rendering
*
* @deprecated use {@link #template(Template)} instead.
*/
@Deprecated
public void templateParams(Map<String, Object> params) {
updateOrCreateScript(null, null, null, params);
}
/**
* The name of the stored template
*
* @deprecated use {@link #template()} instead.
*/
@Deprecated
public String templateName() {
return template == null ? null : template.getScript();
}
/**
* The name of the stored template
*
* @deprecated use {@link #template()} instead.
*/
@Deprecated
public ScriptService.ScriptType templateType() {
return template == null ? null : template.getType();
}
/**
* Template parameters used for rendering
*
* @deprecated use {@link #template()} instead.
*/
@Deprecated
public Map<String, Object> templateParams() {
return template == null ? null : template.getParams();
}
private void updateOrCreateScript(String templateContent, ScriptType type, String lang, Map<String, Object> params) {
Template template = template();
if (template == null) {
template = new Template(templateContent == null ? "" : templateContent, type == null ? ScriptType.INLINE : type, lang, null,
params);
} else {
String newTemplateContent = templateContent == null ? template.getScript() : templateContent;
ScriptType newTemplateType = type == null ? template.getType() : type;
String newTemplateLang = lang == null ? template.getLang() : lang;
Map<String, Object> newTemplateParams = params == null ? template.getParams() : params;
template = new Template(newTemplateContent, newTemplateType, MustacheScriptEngineService.NAME, null, newTemplateParams);
}
template(template);
}
/**
* Additional search source to execute.
*/
public BytesReference extraSource() {
return this.extraSource;
}
/**
* The tye of search to execute.
*/
public SearchType searchType() {
return searchType;
}
/**
* The indices
*/
@Override
public String[] indices() {
return indices;
}
/**
* If set, will enable scrolling of the search request.
*/
public Scroll scroll() {
return scroll;
}
/**
* If set, will enable scrolling of the search request.
*/
public SearchRequest scroll(Scroll scroll) {
this.scroll = scroll;
return this;
}
/**
* If set, will enable scrolling of the search request for the specified timeout.
*/
public SearchRequest scroll(TimeValue keepAlive) {
return scroll(new Scroll(keepAlive));
}
/**
* If set, will enable scrolling of the search request for the specified timeout.
*/
public SearchRequest scroll(String keepAlive) {
return scroll(new Scroll(TimeValue.parseTimeValue(keepAlive, null, getClass().getSimpleName() + ".Scroll.keepAlive")));
}
/**
* Sets if this request should use the request cache or not, assuming that it can (for
* example, if "now" is used, it will never be cached). By default (not set, or null,
* will default to the index level setting if request cache is enabled or not).
*/
public SearchRequest requestCache(Boolean requestCache) {
this.requestCache = requestCache;
return this;
}
public Boolean requestCache() {
return this.requestCache;
}
/**
* Sets if this request should use the request the token bitset cache or not, assuming the index is configured to use token bitset cache.
*/
public SearchRequest tokenRangesBitsetCache(Boolean tokenRangesBitsetCache) {
this.tokenRangesBitsetCache = tokenRangesBitsetCache;
return this;
}
public Boolean tokenRangesBitsetCache() {
return this.tokenRangesBitsetCache;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
searchType = SearchType.fromId(in.readByte());
indices = new String[in.readVInt()];
for (int i = 0; i < indices.length; i++) {
indices[i] = in.readString();
}
routing = in.readOptionalString();
preference = in.readOptionalString();
if (in.readBoolean()) {
scroll = readScroll(in);
}
source = in.readBytesReference();
extraSource = in.readBytesReference();
types = in.readStringArray();
indicesOptions = IndicesOptions.readIndicesOptions(in);
templateSource = in.readBytesReference();
if (in.readBoolean()) {
template = Template.readTemplate(in);
}
requestCache = in.readOptionalBoolean();
if (in.available() > 0)
tokenRangesBitsetCache = in.readOptionalBoolean();
if (in.available() > 0 && in.readBoolean()) {
Object[] tokens = (Object[]) in.readGenericValue();
this.tokenRanges = new ArrayList<Range<Token>>(tokens.length / 2);
for (int i = 0; i < tokens.length;) {
Range<Token> range = new Range<Token>((Token) tokens[i++], (Token) tokens[i++]);
this.tokenRanges.add(range);
}
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
out.writeByte(searchType.id());
out.writeVInt(indices.length);
for (String index : indices) {
out.writeString(index);
}
out.writeOptionalString(routing);
out.writeOptionalString(preference);
if (scroll == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
scroll.writeTo(out);
}
out.writeBytesReference(source);
out.writeBytesReference(extraSource);
out.writeStringArray(types);
indicesOptions.writeIndicesOptions(out);
out.writeBytesReference(templateSource);
boolean hasTemplate = template != null;
out.writeBoolean(hasTemplate);
if (hasTemplate) {
template.writeTo(out);
}
out.writeOptionalBoolean(requestCache);
out.writeOptionalBoolean(tokenRangesBitsetCache);
out.writeBoolean(tokenRanges != null);
if (tokenRanges != null) {
Token[] tokens = new Token[tokenRanges.size() * 2];
int i = 0;
for (Range<Token> range : tokenRanges) {
tokens[i++] = range.left;
tokens[i++] = range.right;
}
out.writeGenericValue(tokens);
}
}
}