/*
* 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.flink.types.parser;
import org.apache.flink.annotation.PublicEvolving;
import org.apache.flink.configuration.ConfigConstants;
import org.apache.flink.types.FloatValue;
/**
* Parses a text field into a {@link FloatValue}
*/
@PublicEvolving
public class FloatValueParser extends FieldParser<FloatValue> {
private FloatValue result;
@Override
public int parseField(byte[] bytes, int startPos, int limit, byte[] delimiter, FloatValue reusable) {
final int endPos = nextStringEndPos(bytes, startPos, limit, delimiter);
if (endPos < 0) {
return -1;
}
if (endPos > startPos &&
(Character.isWhitespace(bytes[startPos]) || Character.isWhitespace(bytes[endPos - 1]))) {
setErrorState(ParseErrorState.NUMERIC_VALUE_ILLEGAL_CHARACTER);
return -1;
}
String str = new String(bytes, startPos, endPos - startPos, ConfigConstants.DEFAULT_CHARSET);
try {
float value = Float.parseFloat(str);
reusable.setValue(value);
this.result = reusable;
return (endPos == limit) ? limit : endPos + delimiter.length;
}
catch (NumberFormatException e) {
setErrorState(ParseErrorState.NUMERIC_VALUE_FORMAT_ERROR);
return -1;
}
}
@Override
public FloatValue createValue() {
return new FloatValue();
}
@Override
public FloatValue getLastResult() {
return this.result;
}
}