| /* |
| * 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); |
| } |
| } |
| } |