/*
* ModeShape (http://www.modeshape.org)
*
* 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.modeshape.sequencer.text;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
import org.modeshape.common.util.CheckArg;
/**
* An text sequencer implementation that uses a {@link #setSplitPattern(String) regular-expression pattern} to split incoming rows
* into columns. By default, this class uses the pattern {@code ","} to parse files on commas.
*
* @see AbstractTextSequencer
* @see java.util.regex.Pattern
*/
public class DelimitedTextSequencer extends AbstractTextSequencer {
private String splitPattern = ",";
/**
* Sets the regular expression to use to split incoming rows.
*
* @param regularExpression the regular expression to use to split incoming rows; may not be null.
* @throws java.util.regex.PatternSyntaxException if {@code regularExpression} does not represent a valid regular expression that can be
* {@link java.util.regex.Pattern#compile(String) compiled into a pattern}.
*/
public void setSplitPattern( String regularExpression ) throws PatternSyntaxException {
CheckArg.isNotNull(regularExpression, "regularExpression");
Pattern.compile(splitPattern);
splitPattern = regularExpression;
}
@Override
protected String[] parseLine( String line ) {
return line.split(splitPattern);
}
}