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univocity's open source parsers for processing different text formats using a consistent API
/*******************************************************************************
* Copyright 2014 uniVocity Software Pty Ltd
*
* 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 com.univocity.parsers.common.fields;
import java.util.*;
import com.univocity.parsers.common.*;
/**
* A FieldSelector capable of selecting fields by their name.
*
* @see FieldSelector
* @see FieldSet
*
* @author uniVocity Software Pty Ltd - [email protected]
*
*/
public class FieldNameSelector extends FieldSet implements FieldSelector {
/**
* {@inheritDoc}
*/
@Override
public int[] getFieldIndexes(String[] headers) {
headers = ArgumentUtils.normalize(headers);
String[] chosenFields = ArgumentUtils.normalize(this.get().toArray(new String[0]));
Object[] unknownFields = ArgumentUtils.findMissingElements(headers, chosenFields);
if (unknownFields.length > 0) {
throw new IllegalStateException("Unknown field names: " + Arrays.toString(unknownFields) + ". Available fields are: " + Arrays.toString(headers));
}
int[] out = new int[chosenFields.length];
int i = 0;
for (String chosenField : chosenFields) {
out[i++] = ArgumentUtils.indexOf(headers, chosenField);
}
return out;
}
}