RemoveCharsProcessor.java

/**
 * Copyright (C) 2015 Bruno Candido Volpato da Cunha (brunocvcunha@gmail.com)
 *
 * Licensed 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.brunocvcunha.mdmlang.processor.impl;

import java.util.List;

import org.apache.log4j.Logger;
import org.brunocvcunha.mdmlang.processor.MDMAbstractProcessor;
import org.brunocvcunha.mdmlang.processor.MDMProcessorContext;
import org.brunocvcunha.mdmlang.processor.constants.ProcessingSide;

/**
 * Processor for 'removeCharsOperation'. It removes chars from left or right according to specified
 * rule
 * 
 * @author Bruno Candido Volpato da Cunha
 *
 */
public class RemoveCharsProcessor extends MDMAbstractProcessor {

  private static final Logger log = Logger.getLogger(RemoveCharsProcessor.class);

  private int quantity;
  private ProcessingSide processingSide;

  public RemoveCharsProcessor(MDMProcessorContext context, List<String> fields, int quantity,
      ProcessingSide processingSide) {
    super(context, fields);
    this.quantity = quantity;
    this.processingSide = processingSide;
  }

  @Override
  public void process() {
    log.info("Processing remove for " + getFields());

    for (String field : getFields()) {

      String value = getPrincipalWorkingValue(field).toString();
      if (processingSide == ProcessingSide.LEFT) {
        update(field, value.substring(quantity));
      } else {
        update(field, value.substring(0, value.length() - quantity));
      }

    }

  }

}