/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package com.bigdata.rdf.internal.impl.literal;
import java.math.BigDecimal;
import java.math.BigInteger;
import com.bigdata.rdf.internal.DTE;
import com.bigdata.rdf.internal.IV;
import com.bigdata.rdf.lexicon.LexiconRelation;
import com.bigdata.rdf.model.BigdataLiteral;
import com.bigdata.rdf.model.BigdataValueFactory;
/** Implementation for inline <code>xsd:unsignedByte</code>. */
public class XSDUnsignedByteIV<V extends BigdataLiteral> extends
AbstractLiteralIV<V, Short> {
/**
*
*/
private static final long serialVersionUID = 1L;
/**
* The unsigned byte value.
*/
private final byte value;
/**
* The unsigned byte value.
*/
public byte rawValue() {
return value;
}
public IV<V, Short> clone(final boolean clearCache) {
final XSDUnsignedByteIV<V> tmp = new XSDUnsignedByteIV<V>(value);
if (!clearCache) {
tmp.setValue(getValueCache());
}
return tmp;
}
/**
*
* @param value
* The unsigned byte value.
*/
public XSDUnsignedByteIV(final byte value) {
super(DTE.XSDUnsignedByte);
this.value = value;
}
final public Short getInlineValue() {
return promote();
}
/**
* Promote the unsigned byte into a signed short.
*/
public final short promote() {
return promote(value);
}
public static short promote(final byte v) {
final int i = v - Byte.MIN_VALUE;
return (short) i;
}
@SuppressWarnings("unchecked")
public V asValue(final LexiconRelation lex) {
V v = getValueCache();
if (v == null) {
final BigdataValueFactory f = lex.getValueFactory();
v = (V) f.createLiteral(value, true);
v.setIV(this);
setValue(v);
}
return v;
}
@Override
final public long longValue() {
return (long) promote();
}
/*
* From the spec: If the argument is a numeric type or a typed literal with
* a datatype derived from a numeric type, the EBV is false if the operand
* value is NaN or is numerically equal to zero; otherwise the EBV is true.
*/
@Override
public boolean booleanValue() {
return value != UNSIGNED_ZERO ? true : false;
}
private static final byte UNSIGNED_ZERO = (byte)0x80;//(byte) -128;
@Override
public byte byteValue() {
return (byte) promote();
}
@Override
public double doubleValue() {
return (double) promote();
}
@Override
public float floatValue() {
return (float) promote();
}
@Override
public int intValue() {
return (int) promote();
}
@Override
public short shortValue() {
return (short) promote();
}
@Override
public String stringValue() {
return Short.toString(promote());
}
@Override
public BigDecimal decimalValue() {
return BigDecimal.valueOf(promote());
}
@Override
public BigInteger integerValue() {
return BigInteger.valueOf(promote());
}
public boolean equals(final Object o) {
if (this == o)
return true;
if (o instanceof XSDUnsignedByteIV<?>) {
return this.value == ((XSDUnsignedByteIV<?>) o).value;
}
return false;
}
/**
* Return the hash code of the byte value.
*
* @see Byte#hashCode()
*/
public int hashCode() {
return (int) value;
}
public int byteLength() {
return 1 + 1;
}
@SuppressWarnings("rawtypes")
@Override
public int _compareTo(final IV o) {
final XSDUnsignedByteIV<?> t = (XSDUnsignedByteIV<?>) o;
return value == t.value ? 0 : value < t.value ? -1 : 1;
// final short value = promote();
//
// final short value2 = t.promote();
//
// return value == value2 ? 0 : value < value2 ? -1 : 1;
}
}