/*
* Copyright (C) 2005, 2007 db4objects Inc. http://www.db4o.com
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* db4objects - Initial API and implementation
*/
package org.eclipse.core.internal.databinding.conversion;
import org.eclipse.core.internal.databinding.conversion.StringToNumberParser.ParseResult;
import org.eclipse.core.internal.databinding.validation.NumberFormatConverter;
import com.ibm.icu.text.NumberFormat;
/**
* @since 1.0
*/
public class StringToByteConverter extends NumberFormatConverter {
private String outOfRangeMessage;
private NumberFormat numberFormat;
private boolean primitive;
/**
* @param numberFormat
* @param toType
*/
private StringToByteConverter(NumberFormat numberFormat, Class toType) {
super(String.class, toType, numberFormat);
primitive = toType.isPrimitive();
this.numberFormat = numberFormat;
}
/**
* @param numberFormat
* @param primitive
* @return converter
*/
public static StringToByteConverter toByte(NumberFormat numberFormat,
boolean primitive) {
return new StringToByteConverter(numberFormat, (primitive) ? Byte.TYPE : Byte.class);
}
/**
* @param primitive
* @return converter
*/
public static StringToByteConverter toByte(boolean primitive) {
return toByte(NumberFormat.getIntegerInstance(), primitive);
}
/* (non-Javadoc)
* @see org.eclipse.core.databinding.conversion.IConverter#convert(java.lang.Object)
*/
public Object convert(Object fromObject) {
ParseResult result = StringToNumberParser.parse(fromObject,
numberFormat, primitive);
if (result.getPosition() != null) {
// this shouldn't happen in the pipeline as validation should catch
// it but anyone can call convert so we should return a properly
// formatted message in an exception
throw new IllegalArgumentException(StringToNumberParser
.createParseErrorMessage((String) fromObject, result
.getPosition()));
} else if (result.getNumber() == null) {
// if an error didn't occur and the number is null then it's a boxed
// type and null should be returned
return null;
}
if (StringToNumberParser.inByteRange(result.getNumber())) {
return new Byte(result.getNumber().byteValue());
}
synchronized (this) {
if (outOfRangeMessage == null) {
outOfRangeMessage = StringToNumberParser
.createOutOfRangeMessage(new Byte(Byte.MIN_VALUE), new Byte(Byte.MAX_VALUE), numberFormat);
}
throw new IllegalArgumentException(outOfRangeMessage);
}
}
}