/**
* 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.hadoop.gateway.shell.hbase.table.row;
import org.apache.hadoop.gateway.shell.AbstractRequest;
import org.apache.hadoop.gateway.shell.BasicResponse;
import org.apache.hadoop.gateway.shell.Hadoop;
import org.apache.hadoop.gateway.shell.hbase.HBase;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.utils.URIBuilder;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Callable;
public class QueryRows {
public static class Request extends AbstractRequest<Response> {
private String rowsId;
private String tableName;
private List<Column> columns = new ArrayList<Column>();
private Long startTime;
private Long endTime;
private Long numVersions;
public Request( Hadoop session, String rowsId, String tableName ) {
super( session );
this.rowsId = rowsId;
this.tableName = tableName;
}
public Request column( String family, String qualifier ) {
Column column = new Column( family, qualifier );
columns.add( column );
return this;
}
public Request column( String family ) {
return column( family, null );
}
public Request startTime( Long startTime ) {
this.startTime = startTime;
return this;
}
public Request endTime( Long endTime ) {
this.endTime = endTime;
return this;
}
public Request times( Long startTime, Long endTime ) {
this.startTime = startTime;
this.endTime = endTime;
return this;
}
public Request numVersions( Long numVersions ) {
this.numVersions = numVersions;
return this;
}
protected Callable<Response> callable() {
return new Callable<Response>() {
@Override
public Response call() throws Exception {
String rowsIdToQuery = rowsId;
if( rowsIdToQuery == null || rowsIdToQuery.isEmpty() ) {
rowsIdToQuery = "*";
}
StringBuilder columnsURIPart = new StringBuilder( "/" );
int index = 0;
for( Column column : columns ) {
if( index++ > 0 ) {
columnsURIPart.append( "," );
}
columnsURIPart.append( column.toURIPart() );
}
columnsURIPart.append( "/" );
StringBuilder timesURIPart = new StringBuilder();
if( startTime != null && endTime != null ) {
timesURIPart.append( startTime ).append( "," ).append( endTime );
} else if( startTime != null ) {
timesURIPart.append( startTime ).append( "," ).append( Long.MAX_VALUE );
} else if( endTime != null ) {
timesURIPart.append( endTime );
}
StringBuilder versionURIPart = new StringBuilder();
if( numVersions != null ) {
versionURIPart.append( "?v=" ).append( numVersions );
}
URIBuilder uri = uri( HBase.SERVICE_PATH, "/", tableName, "/", rowsIdToQuery, columnsURIPart.toString(), timesURIPart.toString(), versionURIPart.toString() );
HttpGet get = new HttpGet( uri.build() );
get.setHeader( "Accept", "application/json" );
return new Response( execute( get ) );
}
};
}
}
public static class Response extends BasicResponse {
Response( HttpResponse response ) {
super( response );
}
}
}