org.apache.commons.beanutils.converters.ByteArrayConverter Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* 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.commons.beanutils.converters;
import java.util.List;
import org.apache.commons.beanutils.ConversionException;
/**
* Standard {@link org.apache.commons.beanutils.Converter} implementation that converts an incoming
* String into a primitive array of byte. On a conversion failure, returns
* a specified default value or throws a {@link ConversionException} depending
* on how this instance is constructed.
*
* @version $Id$
* @since 1.4
* @deprecated Replaced by the new {@link ArrayConverter} implementation
*/
@Deprecated
public final class ByteArrayConverter extends AbstractArrayConverter {
// ----------------------------------------------------------- Constructors
/**
* Create a {@link org.apache.commons.beanutils.Converter} that will
* throw a {@link ConversionException} if a conversion error occurs.
*/
public ByteArrayConverter() {
this.defaultValue = null;
this.useDefault = false;
}
/**
* Create a {@link org.apache.commons.beanutils.Converter} that will return
* the specified default value if a conversion error occurs.
*
* @param defaultValue The default value to be returned
*/
public ByteArrayConverter(final Object defaultValue) {
this.defaultValue = defaultValue;
this.useDefault = true;
}
// ------------------------------------------------------- Static Variables
/**
* Model object for type comparisons.
*/
private static final byte[] MODEL = new byte[0];
// --------------------------------------------------------- Public Methods
/**
* Convert the specified input object into an output object of the
* specified type.
*
* @param type Data type to which this value should be converted
* @param value The input value to be converted
* @return the converted value
* @throws ConversionException if conversion cannot be performed
* successfully
*/
@Override
public Object convert(final Class type, final Object value) {
// Deal with a null value
if (value == null) {
if (useDefault) {
return (defaultValue);
} else {
throw new ConversionException("No value specified");
}
}
// Deal with the no-conversion-needed case
if (MODEL.getClass() == value.getClass()) {
return (value);
}
// Deal with input value as a String array
if (strings.getClass() == value.getClass()) {
try {
final String[] values = (String[]) value;
final byte[] results = new byte[values.length];
for (int i = 0; i < values.length; i++) {
results[i] = Byte.parseByte(values[i]);
}
return (results);
} catch (final Exception e) {
if (useDefault) {
return (defaultValue);
} else {
throw new ConversionException(value.toString(), e);
}
}
}
// Parse the input value as a String into elements
// and convert to the appropriate type
try {
final List list = parseElements(value.toString());
final byte[] results = new byte[list.size()];
for (int i = 0; i < results.length; i++) {
results[i] = Byte.parseByte((String) list.get(i));
}
return (results);
} catch (final Exception e) {
if (useDefault) {
return (defaultValue);
} else {
throw new ConversionException(value.toString(), e);
}
}
}
}