/*
* Copyright 2014-2015 the original author or authors
*
* 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.
*/
package com.wplatform.ddal.value;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import com.wplatform.ddal.message.DbException;
import com.wplatform.ddal.message.ErrorCode;
import com.wplatform.ddal.util.MathUtils;
/**
* Implementation of the SMALLINT data type.
*/
public class ValueShort extends Value {
/**
* The precision in digits.
*/
static final int PRECISION = 5;
/**
* The maximum display size of a short.
* Example: -32768
*/
static final int DISPLAY_SIZE = 6;
private final short value;
private ValueShort(short value) {
this.value = value;
}
private static ValueShort checkRange(int x) {
if (x < Short.MIN_VALUE || x > Short.MAX_VALUE) {
throw DbException.get(ErrorCode.NUMERIC_VALUE_OUT_OF_RANGE_1,
Integer.toString(x));
}
return ValueShort.get((short) x);
}
/**
* Get or create a short value for the given short.
*
* @param i the short
* @return the value
*/
public static ValueShort get(short i) {
return (ValueShort) Value.cache(new ValueShort(i));
}
@Override
public Value add(Value v) {
ValueShort other = (ValueShort) v;
return checkRange(value + other.value);
}
@Override
public int getSignum() {
return Integer.signum(value);
}
@Override
public Value negate() {
return checkRange(-(int) value);
}
@Override
public Value subtract(Value v) {
ValueShort other = (ValueShort) v;
return checkRange(value - other.value);
}
@Override
public Value multiply(Value v) {
ValueShort other = (ValueShort) v;
return checkRange(value * other.value);
}
@Override
public Value divide(Value v) {
ValueShort other = (ValueShort) v;
if (other.value == 0) {
throw DbException.get(ErrorCode.DIVISION_BY_ZERO_1, getSQL());
}
return ValueShort.get((short) (value / other.value));
}
@Override
public Value modulus(Value v) {
ValueShort other = (ValueShort) v;
if (other.value == 0) {
throw DbException.get(ErrorCode.DIVISION_BY_ZERO_1, getSQL());
}
return ValueShort.get((short) (value % other.value));
}
@Override
public String getSQL() {
return getString();
}
@Override
public int getType() {
return Value.SHORT;
}
@Override
public short getShort() {
return value;
}
@Override
protected int compareSecure(Value o, CompareMode mode) {
ValueShort v = (ValueShort) o;
return MathUtils.compareInt(value, v.value);
}
@Override
public String getString() {
return String.valueOf(value);
}
@Override
public long getPrecision() {
return PRECISION;
}
@Override
public int hashCode() {
return value;
}
@Override
public Object getObject() {
return Short.valueOf(value);
}
@Override
public void set(PreparedStatement prep, int parameterIndex)
throws SQLException {
prep.setShort(parameterIndex, value);
}
@Override
public int getDisplaySize() {
return DISPLAY_SIZE;
}
@Override
public boolean equals(Object other) {
return other instanceof ValueShort && value == ((ValueShort) other).value;
}
}