/*
* @(#)$Id: XInteger.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.literal;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.math.BigDecimal;
import xbird.util.lang.ObjectUtils;
import xbird.xquery.XQueryException;
import xbird.xquery.dm.value.AtomicValue;
import xbird.xquery.dm.value.Item;
import xbird.xquery.dm.value.xsi.BooleanValue;
import xbird.xquery.meta.DynamicContext;
import xbird.xquery.type.AtomicType;
import xbird.xquery.type.TypeTable;
import xbird.xquery.type.xs.IntegerType;
/**
*
* <DIV lang="en"></DIV>
* <DIV lang="ja"></DIV>
*
* @author yui (yuin405+xbird@gmail.com)
*/
public final class XInteger extends XNumber {
private static final long serialVersionUID = -9151271868116812898L;
public static final int ID = 4;
private long value;
public XInteger() {
super();
}
public XInteger(String literal, IntegerType type) {
super(literal, type);
this.value = Long.parseLong(literal);
}
public XInteger(String literal) {
this(literal, IntegerType.INTEGER);
}
public XInteger(long value, IntegerType type) {
super(Long.toString(value), type);
this.value = value;
}
public XInteger(long value) {
this(value, IntegerType.INTEGER);
}
public void setValue(long v) {
this.value = v;
onUpdate();
}
public long getValue() {
return value;
}
public Number getNumber() {
return value;
}
public Long toJavaObject() throws XQueryException {
return value;
}
@Override
public int hashCode() {
return (int) (value ^ (value >>> 32));
}
public int compareTo(Item trg) {
if(trg instanceof XInteger) {
final long trgValue = ((XInteger) trg).getValue();
return Double.compare(value, trgValue);
}
return super.compareTo(trg);
}
public static XInteger valueOf(final long value) {
return new XInteger(value);
}
public boolean isNaN() {
return false;
}
public XInteger negate() {
this.value = (-value);
onUpdate();
return this;
}
public XNumber ceil() {
return this;
}
public XNumber floor() {
return this;
}
public XNumber round() {
return this;
}
public XNumber roundHalfToEven(int precision) {
return this;
}
@Override
protected void onUpdate() {
String sv = Long.toString(value);
setStringValue(sv);
}
@Override
public BigDecimal asDecimal() {
return new BigDecimal(value);
}
@Override
public long asLong() {
return value;
}
@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 = new BooleanValue(value != 0);
break;
case TypeTable.INTEGER_TID:
case TypeTable.NUMERIC_TID:
v = this;
break;
case TypeTable.FLOAT_TID:
v = XFloat.valueOf(value);
break;
case TypeTable.DOUBLE_TID:
v = XDouble.valueOf(value);
break;
case TypeTable.DECIMAL_TID:
v = XDecimal.valueOf(asDecimal());
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 = AtomicType.readAtomicType(in);
this.value = in.readLong();
}
public void writeExternal(ObjectOutput out) throws IOException {
ObjectUtils.writeString(out, _lexicalValue);
_type.writeExternal(out);
out.writeLong(value);
}
@Override
public int getIdentifier() {
return ID;
}
}