org.elasticsearch.hadoop.cascading.CascadingFieldExtractor Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of elasticsearch-hadoop Show documentation

Elasticsearch Hadoop

There is a newer version: 8.17.0

/*
 * 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.hadoop.cascading;

import org.elasticsearch.hadoop.serialization.field.ConstantFieldExtractor;
import org.elasticsearch.hadoop.serialization.field.FieldExplainer;

import cascading.scheme.SinkCall;

public class CascadingFieldExtractor extends ConstantFieldExtractor implements FieldExplainer {

    @SuppressWarnings({ "rawtypes" })
    @Override
    protected Object extractField(Object target) {
        if (target instanceof SinkCall) {
            Object object = ((SinkCall) target).getOutgoingEntry().getObject(getFieldName());
            if (object != null) {
                return object;
            }
        }
        return NOT_FOUND;
    }

    @Override
    public String toString(Object field) {
        if (field instanceof SinkCall) {
            return ((SinkCall) field).getOutgoingEntry().toString();
        }
        return field.toString();
    }
}