metron-platform/metron-common/src/main/java/org/apache/metron/common/field/DeDotFieldNameConverter.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.metron.common.field;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.Serializable;
import java.lang.invoke.MethodHandles;

/**
 * A {@link FieldNameConverter} that replaces all field names containing dots
 * with colons.
 */
public class DeDotFieldNameConverter implements FieldNameConverter, Serializable {

  private static final long serialVersionUID = -3126840090749760299L;
  private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());

  @Override
  public String convert(String originalField) {

    String newField = originalField.replace(".",":");

    if(LOG.isDebugEnabled() && originalField.contains(".")) {
      LOG.debug("Renamed dotted field; original={}, new={}", originalField, newField);
    }

    return newField;
  }
}