/*
* Copyright 2004-2023 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.value;
import java.math.BigDecimal;
import org.h2.api.ErrorCode;
import org.h2.engine.CastDataProvider;
import org.h2.message.DbException;
/**
* Implementation of the SMALLINT data type.
*/
public final class ValueSmallint extends Value {
/**
* The precision in bits.
*/
static final int PRECISION = 16;
/**
* The approximate precision in decimal digits.
*/
public static final int DECIMAL_PRECISION = 5;
/**
* The maximum display size of a SMALLINT.
* Example: -32768
*/
static final int DISPLAY_SIZE = 6;
private final short value;
private ValueSmallint(short value) {
this.value = value;
}
@Override
public Value add(Value v) {
ValueSmallint other = (ValueSmallint) v;
return checkRange(value + other.value);
}
private static ValueSmallint checkRange(int x) {
if ((short) x != x) {
throw DbException.get(ErrorCode.NUMERIC_VALUE_OUT_OF_RANGE_1,
Integer.toString(x));
}
return ValueSmallint.get((short) x);
}
@Override
public int getSignum() {
return Integer.signum(value);
}
@Override
public Value negate() {
return checkRange(-(int) value);
}
@Override
public Value subtract(Value v) {
ValueSmallint other = (ValueSmallint) v;
return checkRange(value - other.value);
}
@Override
public Value multiply(Value v) {
ValueSmallint other = (ValueSmallint) v;
return checkRange(value * other.value);
}
@Override
public Value divide(Value v, TypeInfo quotientType) {
ValueSmallint other = (ValueSmallint) v;
if (other.value == 0) {
throw DbException.get(ErrorCode.DIVISION_BY_ZERO_1, getTraceSQL());
}
return checkRange(value / other.value);
}
@Override
public Value modulus(Value v) {
ValueSmallint other = (ValueSmallint) v;
if (other.value == 0) {
throw DbException.get(ErrorCode.DIVISION_BY_ZERO_1, getTraceSQL());
}
return ValueSmallint.get((short) (value % other.value));
}
@Override
public StringBuilder getSQL(StringBuilder builder, int sqlFlags) {
if ((sqlFlags & NO_CASTS) == 0) {
return builder.append("CAST(").append(value).append(" AS SMALLINT)");
}
return builder.append(value);
}
@Override
public TypeInfo getType() {
return TypeInfo.TYPE_SMALLINT;
}
@Override
public int getValueType() {
return SMALLINT;
}
@Override
public byte[] getBytes() {
short value = this.value;
return new byte[] { (byte) (value >> 8), (byte) value };
}
@Override
public short getShort() {
return value;
}
@Override
public int getInt() {
return value;
}
@Override
public long getLong() {
return value;
}
@Override
public BigDecimal getBigDecimal() {
return BigDecimal.valueOf(value);
}
@Override
public float getFloat() {
return value;
}
@Override
public double getDouble() {
return value;
}
@Override
public int compareTypeSafe(Value o, CompareMode mode, CastDataProvider provider) {
return Integer.compare(value, ((ValueSmallint) o).value);
}
@Override
public String getString() {
return Integer.toString(value);
}
@Override
public int hashCode() {
return value;
}
/**
* Get or create a SMALLINT value for the given short.
*
* @param i the short
* @return the value
*/
public static ValueSmallint get(short i) {
return (ValueSmallint) Value.cache(new ValueSmallint(i));
}
@Override
public boolean equals(Object other) {
return other instanceof ValueSmallint && value == ((ValueSmallint) other).value;
}
}