/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.blur.shell;
import java.io.PrintWriter;
import java.io.Writer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.apache.blur.thrift.generated.BlurQuery;
import org.apache.blur.thrift.generated.Facet;
import org.apache.blur.thrift.generated.HighlightOptions;
import org.apache.blur.thrift.generated.Query;
import org.apache.blur.thrift.generated.ScoreType;
import org.apache.blur.thrift.generated.Selector;
import org.apache.blur.thrift.generated.SortField;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.cli.PosixParser;
public class QueryCommandHelper {
public static final String QUERY = "query";
public static final String WIDTH = "width";
public static final String SORT = "sort";
public static final String FACET = "facet";
public static final String ROW_ID = "rowId";
public static final String MINIMUM_NUMBER_OF_RESULTS = "min";
public static final String MAX_QUERY_TIME = "max";
public static final String FETCH = "fetch";
public static final String START = "start";
public static final String DISABLE_ROW_QUERY = "disableRowQuery";
public static final String SCORE_TYPE = "scoreType";
public static final String RECORD_FILTER = "recordFilter";
public static final String ROW_FILTER = "rowFilter";
@SuppressWarnings("unchecked")
public static BlurQuery getBlurQuery(CommandLine commandLine) {
Option[] options = commandLine.getOptions();
Query query = new Query();
if (commandLine.hasOption(QUERY)) {
String queryString = join(Arrays.asList(commandLine.getOptionValues(QUERY)), " ");
query.setQuery(queryString);
}
if (commandLine.hasOption(DISABLE_ROW_QUERY)) {
query.setRowQuery(false);
}
if (commandLine.hasOption(SCORE_TYPE)) {
String scoreTypeStr = commandLine.getOptionValue(SCORE_TYPE);
ScoreType scoreType = ScoreType.valueOf(scoreTypeStr.toUpperCase());
query.setScoreType(scoreType);
}
if (commandLine.hasOption(RECORD_FILTER)) {
String recordFilter = commandLine.getOptionValue(RECORD_FILTER);
query.setRecordFilter(recordFilter);
}
if (commandLine.hasOption(ROW_FILTER)) {
String rowFilter = commandLine.getOptionValue(ROW_FILTER);
query.setRecordFilter(rowFilter);
}
// String recordFilter;
// String rowFilter;
// String rowId;
// long start;
// int fetch;
// long maxQueryTime;
// long minimumNumberOfResults;
// List<Facet> facets;
// List<SortField> sortFields;
BlurQuery blurQuery = new BlurQuery();
blurQuery.setQuery(query);
Selector selector = new Selector(Main.selector);
if (!query.isRowQuery()) {
selector.setRecordOnly(true);
}
blurQuery.setSelector(selector);
blurQuery.setCacheResult(false);
blurQuery.setUseCacheIfPresent(false);
if (commandLine.hasOption(START)) {
String startStr = commandLine.getOptionValue(START);
blurQuery.setStart(Long.parseLong(startStr));
}
if (commandLine.hasOption(FETCH)) {
String fetchStr = commandLine.getOptionValue(FETCH);
blurQuery.setFetch(Integer.parseInt(fetchStr));
}
if (commandLine.hasOption(MAX_QUERY_TIME)) {
String maxQueryTimeStr = commandLine.getOptionValue(MAX_QUERY_TIME);
blurQuery.setMaxQueryTime(Long.parseLong(maxQueryTimeStr));
}
if (commandLine.hasOption(MINIMUM_NUMBER_OF_RESULTS)) {
String minNumbResultsStr = commandLine.getOptionValue(MINIMUM_NUMBER_OF_RESULTS);
blurQuery.setMinimumNumberOfResults(Long.parseLong(minNumbResultsStr));
}
if (commandLine.hasOption(ROW_ID)) {
String rowId = commandLine.getOptionValue(ROW_FILTER);
blurQuery.setRowId(rowId);
}
List<Facet> facets = new ArrayList<Facet>();
for (Option option : options) {
if (option.getOpt().equals(FACET)) {
List<String> valuesList = option.getValuesList();
Facet facet = new Facet();
facet.setQueryStr(join(valuesList, " "));
facets.add(facet);
}
}
if (!facets.isEmpty()) {
blurQuery.setFacets(facets);
}
List<SortField> sortFields = new ArrayList<SortField>();
for (Option option : options) {
if (option.getOpt().equals(SORT)) {
List<String> valuesList = option.getValuesList();
if (valuesList.size() == 2) {
sortFields.add(new SortField(valuesList.get(0), valuesList.get(1), false));
} else if (valuesList.size() == 3) {
sortFields.add(new SortField(valuesList.get(0), valuesList.get(1), Boolean.parseBoolean(valuesList.get(2))));
} else {
throw new RuntimeException("Sort take 2 or 3 parameters.");
}
}
}
if (!sortFields.isEmpty()) {
blurQuery.setSortFields(sortFields);
}
if (Main.highlight) {
blurQuery.getSelector().setHighlightOptions(new HighlightOptions());
}
return blurQuery;
}
private static String join(List<String> argList, String sep) {
StringBuilder builder = new StringBuilder();
for (String s : argList) {
if (builder.length() != 0) {
builder.append(sep);
}
builder.append(s);
}
return builder.toString();
}
@SuppressWarnings("static-access")
public static CommandLine parse(String[] otherArgs, Writer out, String usage) {
Options options = new Options();
options.addOption(OptionBuilder.hasArgs().withDescription("* Query string.").isRequired().create(QUERY));
options.addOption(OptionBuilder.withDescription("Disables row query. (Enabled by default)").create(
DISABLE_ROW_QUERY));
options.addOption(OptionBuilder.hasArg().withArgName(SCORE_TYPE).withDescription("Specify the scoring type.")
.create(SCORE_TYPE));
options.addOption(OptionBuilder.hasArgs().withArgName(ROW_FILTER).withDescription("Specify row filter.")
.create(ROW_FILTER));
options.addOption(OptionBuilder.hasArgs().withArgName(RECORD_FILTER).withDescription("Specify record filter.")
.create(RECORD_FILTER));
options.addOption(OptionBuilder.hasArg().withArgName(START)
.withDescription("Specify the starting position (paging).").create(START));
options.addOption(OptionBuilder.hasArg().withArgName(FETCH)
.withDescription("Specify the number of elements to fetch in a single page.").create(FETCH));
options.addOption(OptionBuilder.hasArg().withArgName(MAX_QUERY_TIME)
.withDescription("Specify the maximum amount of time to allow query to execute.").create(MAX_QUERY_TIME));
options.addOption(OptionBuilder.hasArg().withArgName(MINIMUM_NUMBER_OF_RESULTS)
.withDescription("Specify the minimum number of results required before returning from query.")
.create(MINIMUM_NUMBER_OF_RESULTS));
options.addOption(OptionBuilder.hasArg().withArgName(ROW_ID)
.withDescription("Specify the rowId to execute the query against (this reduces the spray to other shards).")
.create(ROW_ID));
options.addOption(OptionBuilder.withArgName(FACET).hasArgs()
.withDescription("Specify facet to be executed with this query.").create(FACET));
options.addOption(OptionBuilder.withArgName(SORT).hasArgs()
.withDescription("Specify a sort to be applied to this query <family> <column> [<reverse>].").create(SORT));
options.addOption(OptionBuilder.withDescription("Displays help for this command.").create("h"));
options.addOption(OptionBuilder.withArgName(WIDTH).hasArgs()
.withDescription("Specify max column width for display.").create(WIDTH));
CommandLineParser parser = new PosixParser();
CommandLine cmd = null;
try {
cmd = parser.parse(options, otherArgs);
if (cmd.hasOption("h")) {
HelpFormatter formatter = new HelpFormatter();
PrintWriter pw = new PrintWriter(out, true);
formatter.printHelp(pw, HelpFormatter.DEFAULT_WIDTH, usage, null, options, HelpFormatter.DEFAULT_LEFT_PAD,
HelpFormatter.DEFAULT_DESC_PAD, null, false);
return null;
}
} catch (ParseException e) {
HelpFormatter formatter = new HelpFormatter();
PrintWriter pw = new PrintWriter(out, true);
formatter.printHelp(pw, HelpFormatter.DEFAULT_WIDTH, usage, null, options, HelpFormatter.DEFAULT_LEFT_PAD,
HelpFormatter.DEFAULT_DESC_PAD, null, false);
return null;
}
return cmd;
}
}