/*
* @(#)$Id: BooleanValue.java 3619 2008-03-26 07:23:03Z yui $
*
* Copyright 2006-2008 Makoto YUI
*
* Licensed 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.
*
* Contributors:
* Makoto YUI - initial implementation
*/
package xbird.xquery.dm.value.xsi;
import java.io.*;
import java.math.BigDecimal;
import xbird.util.lang.ObjectUtils;
import xbird.xquery.XQRTException;
import xbird.xquery.XQueryException;
import xbird.xquery.dm.value.AtomicValue;
import xbird.xquery.dm.value.Item;
import xbird.xquery.dm.value.literal.*;
import xbird.xquery.meta.DynamicContext;
import xbird.xquery.type.AtomicType;
import xbird.xquery.type.TypeTable;
import xbird.xquery.type.xs.BooleanType;
/**
*
* <DIV lang="en"></DIV>
* <DIV lang="ja"></DIV>
*
* @author Makoto YUI (yuin405+xbird@gmail.com)
*/
public final class BooleanValue extends AtomicValue {
private static final long serialVersionUID = 7379750560294251377L;
public static final int ID = 6;
public static final BooleanValue TRUE = new BooleanValue(true);
public static final BooleanValue FALSE = new BooleanValue(false);
private/* final */boolean _value;
public BooleanValue() {
super();
}
public BooleanValue(String literal) {
super(literal, BooleanType.BOOLEAN);
this._value = toBoolean(literal);
}
public BooleanValue(boolean value) {
super(Boolean.toString(value), BooleanType.BOOLEAN);
this._value = value;
}
public boolean booleanValue() {
return _value;
}
public Boolean toJavaObject() throws XQueryException {
return _value;
}
@Override
public int compareTo(Item trg) {
if(!(trg instanceof BooleanValue)) {
throw new XQRTException("err:XPTY0004", "Imcomparable "
+ trg.getClass().getSimpleName() + " with BooleanValue");
}
boolean trgValue = ((BooleanValue) trg)._value;
return (trgValue == _value) ? 0 : (_value ? 1 : -1);
}
public static boolean toBoolean(String literal) {
if(literal.equals("true") || literal.equals("1")) {
return true;
} else if(literal.equals("false") || literal.equals("0")) {
return false;
} else {
throw new IllegalArgumentException("Invalid format: " + literal);
}
}
@Deprecated
public static BooleanValue valueOf(String literal) {
return toBoolean(literal) ? TRUE : FALSE;
}
@Override
public String stringValue() {
return this.toString();
}
@Override
public String toString() {
return _value ? "true" : "false";
}
@Override
public <T extends AtomicValue> T castAs(AtomicType trgType, DynamicContext dynEnv)
throws XQueryException {
final int ttid = trgType.getTypeId();
final AtomicValue v;
switch(ttid) {
case TypeTable.BOOLEAN_TID:
v = this;
break;
case TypeTable.NUMERIC_TID:
case TypeTable.INTEGER_TID:
v = XInteger.valueOf(_value ? 1 : 0);
break;
case TypeTable.FLOAT_TID:
v = XFloat.valueOf(_value ? 1 : 0);
break;
case TypeTable.DOUBLE_TID:
v = XDouble.valueOf(_value ? 1 : 0);
break;
case TypeTable.DECIMAL_TID:
v = XDecimal.valueOf(_value ? BigDecimal.ONE : BigDecimal.ZERO);
break;
default:
v = super.castAs(trgType, dynEnv);
break;
}
return (T) v;
}
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
this._lexicalValue = ObjectUtils.readString(in);
this._type = BooleanType.BOOLEAN;
this._value = in.readBoolean();
}
public void writeExternal(ObjectOutput out) throws IOException {
ObjectUtils.writeString(out, _lexicalValue);
out.writeBoolean(_value);
}
@Override
public int getIdentifier() {
return ID;
}
}