/*
* Copyright 2010 NCHOVY
*
* 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.krakenapps.log.api;
import java.util.HashMap;
import java.util.Map;
import java.util.StringTokenizer;
public class DelimiterParser implements LogParser {
private final String delimiter;
private final String[] columnHeaders;
private final String targetField;
public DelimiterParser(String delimiter, String[] columnHeaders) {
this(delimiter, columnHeaders, "line");
}
public DelimiterParser(String delimiter, String[] columnHeaders, String targetField) {
this.delimiter = delimiter;
this.columnHeaders = columnHeaders;
this.targetField = targetField;
}
@Override
public Map<String, Object> parse(Map<String, Object> params) {
String line = (String) params.get(targetField);
if (line == null)
return params;
HashMap<String, Object> m = new HashMap<String, Object>(40);
StringTokenizer tok = new StringTokenizer(line, delimiter);
int i = 0;
while (tok.hasMoreTokens()) {
String token = tok.nextToken();
if (token != null)
token = token.trim();
if (columnHeaders != null && i < columnHeaders.length)
m.put(columnHeaders[i], token);
else
m.put("column" + Integer.toString(i), token);
i++;
}
return m;
}
}