ModelAwareRowPrefixMatchingFilter.java

/**
 * 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.camel.component.hbase.filters;

import org.apache.camel.CamelContext;
import org.apache.camel.component.hbase.model.HBaseRow;
import org.apache.hadoop.hbase.filter.FilterList;
import org.apache.hadoop.hbase.filter.PrefixFilter;

/**
 * A {@link FilterList} that contains multiple {@link PrefixFilter}s one per column that is part of the model.
 */
public class ModelAwareRowPrefixMatchingFilter extends ModelAwareFilterList {

    /**
     * Writable constructor, do not use.
     */
    public ModelAwareRowPrefixMatchingFilter() {
    }

    /**
     * Applies the message to {@link org.apache.hadoop.hbase.filter.Filter} to
     * context.
     */
    @Override
    public void apply(CamelContext context, HBaseRow rowModel) {
        getFilters().clear();
        if (rowModel != null) {
            if (rowModel.getId() != null) {
                byte[] value = context.getTypeConverter().convertTo(byte[].class, rowModel.getId());
                PrefixFilter rowPrefixFilter = new PrefixFilter(value);
                addFilter(rowPrefixFilter);
            }
        }
    }
}