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/*
* ====================================================================
* Project: openMDX/Core, http://www.openmdx.org/
* Description: StandardPrimitiveTypeParser
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 2014, OMEX AG, Switzerland
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the openMDX team nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* ------------------
*
* This product includes software developed by other organizations as
* listed in the NOTICE file.
*/
package org.openmdx.kernel.text.parsing;
import java.text.ParseException;
import org.openmdx.kernel.exception.BasicException;
import org.openmdx.kernel.text.spi.Parser;
/**
* Abstract Parser
*/
public abstract class AbstractParser implements Parser {
/**
* Constructor
*/
protected AbstractParser() {
super();
}
/* (non-Javadoc)
* @see org.w3c.spi.Parser#parse(java.lang.Class, java.lang.String)
*/
@SuppressWarnings("unchecked")
@Override
public T parse(
Class valueClass,
String string
) {
try {
if(string == null){
return null;
}
final Object value = parseAs(string, valueClass);
if(valueClass == null) {
return (T)value;
} else {
return valueClass.cast(value);
}
} catch (Exception exception) {
throw BasicException.initHolder(
new IllegalArgumentException(
"Unable to parse the given value",
BasicException.newEmbeddedExceptionStack(
exception,
BasicException.Code.DEFAULT_DOMAIN,
BasicException.Code.PARSE_FAILURE,
new BasicException.Parameter(
"class",
valueClass == null ? "null" : valueClass.getName()
),
new BasicException.Parameter("value", string)
)
)
);
}
}
/**
* Parse the string as given type
*
* @param valueClass the type
* @param value the string to be parsed
* @return the corresponding type instance
*
* @throws Exception in case of failure
*/
protected Object parseAs(
String externalRepresentation,
Class valueClass
) throws Exception {
if(valueClass == null) {
return externalRepresentation;
} else {
throw new ParseException(
"The given value class is not handled by this parser",
0
);
}
}
}
