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/*
* 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.facet.datehistogram;
import com.google.common.collect.ImmutableMap;
import org.elasticsearch.common.collect.MapBuilder;
import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.joda.DateMathParser;
import org.elasticsearch.common.rounding.DateTimeUnit;
import org.elasticsearch.common.rounding.Rounding;
import org.elasticsearch.common.rounding.TimeZoneRounding;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.index.fielddata.IndexNumericFieldData;
import org.elasticsearch.index.mapper.FieldMapper;
import org.elasticsearch.script.ScriptContext;
import org.elasticsearch.script.ScriptService;
import org.elasticsearch.script.SearchScript;
import org.elasticsearch.search.facet.FacetExecutor;
import org.elasticsearch.search.facet.FacetParser;
import org.elasticsearch.search.facet.FacetPhaseExecutionException;
import org.elasticsearch.search.internal.SearchContext;
import org.joda.time.Chronology;
import org.joda.time.DateTimeZone;
import org.joda.time.chrono.ISOChronology;
import java.io.IOException;
import java.util.Map;
/**
*
*/
public class DateHistogramFacetParser extends AbstractComponent implements FacetParser {
private final ImmutableMap dateTimeUnits;
@Inject
public DateHistogramFacetParser(Settings settings) {
super(settings);
InternalDateHistogramFacet.registerStreams();
dateTimeUnits = MapBuilder.newMapBuilder()
.put("year", DateTimeUnit.YEAR_OF_CENTURY)
.put("1y", DateTimeUnit.YEAR_OF_CENTURY)
.put("quarter", DateTimeUnit.QUARTER)
.put("1q", DateTimeUnit.QUARTER)
.put("month", DateTimeUnit.MONTH_OF_YEAR)
.put("1M", DateTimeUnit.MONTH_OF_YEAR)
.put("week", DateTimeUnit.WEEK_OF_WEEKYEAR)
.put("1w", DateTimeUnit.WEEK_OF_WEEKYEAR)
.put("day", DateTimeUnit.DAY_OF_MONTH)
.put("1d", DateTimeUnit.DAY_OF_MONTH)
.put("hour", DateTimeUnit.HOUR_OF_DAY)
.put("1h", DateTimeUnit.HOUR_OF_DAY)
.put("minute", DateTimeUnit.MINUTES_OF_HOUR)
.put("1m", DateTimeUnit.MINUTES_OF_HOUR)
.put("second", DateTimeUnit.SECOND_OF_MINUTE)
.put("1s", DateTimeUnit.SECOND_OF_MINUTE)
.immutableMap();
}
@Override
public String[] types() {
return new String[]{DateHistogramFacet.TYPE, "dateHistogram"};
}
@Override
public FacetExecutor.Mode defaultMainMode() {
return FacetExecutor.Mode.COLLECTOR;
}
@Override
public FacetExecutor.Mode defaultGlobalMode() {
return FacetExecutor.Mode.COLLECTOR;
}
@Override
public FacetExecutor parse(String facetName, XContentParser parser, SearchContext context) throws IOException {
String keyField = null;
String valueField = null;
String valueScript = null;
ScriptService.ScriptType valueScriptType = null;
String scriptLang = null;
Map params = null;
String interval = null;
DateTimeZone preZone = DateTimeZone.UTC;
DateTimeZone postZone = DateTimeZone.UTC;
boolean preZoneAdjustLargeInterval = false;
long preOffset = 0;
long postOffset = 0;
float factor = 1.0f;
Chronology chronology = ISOChronology.getInstanceUTC();
DateHistogramFacet.ComparatorType comparatorType = DateHistogramFacet.ComparatorType.TIME;
XContentParser.Token token;
String fieldName = null;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
fieldName = parser.currentName();
} else if (token == XContentParser.Token.START_OBJECT) {
if ("params".equals(fieldName)) {
params = parser.map();
}
} else if (token.isValue()) {
if ("field".equals(fieldName)) {
keyField = parser.text();
} else if ("key_field".equals(fieldName) || "keyField".equals(fieldName)) {
keyField = parser.text();
} else if ("value_field".equals(fieldName) || "valueField".equals(fieldName)) {
valueField = parser.text();
} else if ("interval".equals(fieldName)) {
interval = parser.text();
} else if ("time_zone".equals(fieldName) || "timeZone".equals(fieldName)) {
preZone = parseZone(parser, token);
} else if ("pre_zone".equals(fieldName) || "preZone".equals(fieldName)) {
preZone = parseZone(parser, token);
} else if ("pre_zone_adjust_large_interval".equals(fieldName) || "preZoneAdjustLargeInterval".equals(fieldName)) {
preZoneAdjustLargeInterval = parser.booleanValue();
} else if ("post_zone".equals(fieldName) || "postZone".equals(fieldName)) {
postZone = parseZone(parser, token);
} else if ("pre_offset".equals(fieldName) || "preOffset".equals(fieldName)) {
preOffset = parseOffset(parser.text());
} else if ("post_offset".equals(fieldName) || "postOffset".equals(fieldName)) {
postOffset = parseOffset(parser.text());
} else if ("factor".equals(fieldName)) {
factor = parser.floatValue();
} else if (ScriptService.VALUE_SCRIPT_INLINE.match(fieldName)) {
valueScript = parser.text();
valueScriptType = ScriptService.ScriptType.INLINE;
} else if (ScriptService.VALUE_SCRIPT_ID.match(fieldName)) {
valueScript = parser.text();
valueScriptType = ScriptService.ScriptType.INDEXED;
} else if (ScriptService.VALUE_SCRIPT_FILE.match(fieldName)) {
valueScript = parser.text();
valueScriptType = ScriptService.ScriptType.FILE;
} else if ("order".equals(fieldName) || "comparator".equals(fieldName)) {
comparatorType = DateHistogramFacet.ComparatorType.fromString(parser.text());
} else if (ScriptService.SCRIPT_LANG.match(fieldName)) {
scriptLang = parser.text();
}
}
}
if (interval == null) {
throw new FacetPhaseExecutionException(facetName, "[interval] is required to be set for histogram facet");
}
if (keyField == null) {
throw new FacetPhaseExecutionException(facetName, "key field is required to be set for histogram facet, either using [field] or using [key_field]");
}
FieldMapper keyMapper = context.smartNameFieldMapper(keyField);
if (keyMapper == null) {
throw new FacetPhaseExecutionException(facetName, "(key) field [" + keyField + "] not found");
}
IndexNumericFieldData keyIndexFieldData = context.fieldData().getForField(keyMapper);
TimeZoneRounding.Builder tzRoundingBuilder;
DateTimeUnit dateTimeUnit = dateTimeUnits.get(interval);
if (dateTimeUnit != null) {
tzRoundingBuilder = TimeZoneRounding.builder(dateTimeUnit);
} else {
// the interval is a time value?
tzRoundingBuilder = TimeZoneRounding.builder(TimeValue.parseTimeValue(interval, null));
}
Rounding tzRounding = tzRoundingBuilder
.preZone(preZone).postZone(postZone)
.preZoneAdjustLargeInterval(preZoneAdjustLargeInterval)
.preOffset(preOffset).postOffset(postOffset)
.factor(factor)
.build();
if (valueScript != null) {
SearchScript script = context.scriptService().search(context.lookup(), scriptLang, valueScript, valueScriptType, ScriptContext.Standard.AGGS, params);
return new ValueScriptDateHistogramFacetExecutor(keyIndexFieldData, script, tzRounding, comparatorType, context.cacheRecycler());
} else if (valueField != null) {
FieldMapper valueMapper = context.smartNameFieldMapper(valueField);
if (valueMapper == null) {
throw new FacetPhaseExecutionException(facetName, "(value) field [" + valueField + "] not found");
}
IndexNumericFieldData valueIndexFieldData = context.fieldData().getForField(valueMapper);
return new ValueDateHistogramFacetExecutor(keyIndexFieldData, valueIndexFieldData, tzRounding, comparatorType, context.cacheRecycler());
} else {
return new CountDateHistogramFacetExecutor(keyIndexFieldData, tzRounding, comparatorType, context.cacheRecycler());
}
}
private long parseOffset(String offset) throws IOException {
if (offset.charAt(0) == '-') {
return -TimeValue.parseTimeValue(offset.substring(1), null).millis();
}
int beginIndex = offset.charAt(0) == '+' ? 1 : 0;
return TimeValue.parseTimeValue(offset.substring(beginIndex), null).millis();
}
private DateTimeZone parseZone(XContentParser parser, XContentParser.Token token) throws IOException {
if (token == XContentParser.Token.VALUE_NUMBER) {
return DateTimeZone.forOffsetHours(parser.intValue());
} else {
return DateMathParser.parseZone(parser.text());
}
}
}