/*
* Copyright 2004-2014 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.value;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import org.h2.util.MathUtils;
/**
* Base implementation of the ENUM data type.
*
* Currently, this class is used primarily for
* client-server communication.
*/
public class ValueEnumBase extends Value {
private static final int PRECISION = 10;
private static final int DISPLAY_SIZE = 11;
private final String label;
private final int ordinal;
protected ValueEnumBase(final String label, final int ordinal) {
this.label = label;
this.ordinal = ordinal;
}
@Override
public Value add(final Value v) {
final Value iv = v.convertTo(Value.INT);
return convertTo(Value.INT).add(iv);
}
@Override
protected int compareSecure(final Value v, final CompareMode mode) {
return MathUtils.compareInt(getInt(), v.getInt());
}
@Override
public Value divide(final Value v) {
final Value iv = v.convertTo(Value.INT);
return convertTo(Value.INT).divide(iv);
}
@Override
public boolean equals(final Object other) {
return other instanceof ValueEnumBase &&
getInt() == ((ValueEnumBase) other).getInt();
}
/**
* Get or create an enum value with the given label and ordinal.
*
* @param label the label
* @param ordinal the ordinal
* @return the value
*/
public static ValueEnumBase get(final String label, final int ordinal) {
return new ValueEnumBase(label, ordinal);
}
@Override
public int getDisplaySize() {
return DISPLAY_SIZE;
}
@Override
public int getInt() {
return ordinal;
}
@Override
public long getLong() {
return ordinal;
}
@Override
public Object getObject() {
return ordinal;
}
@Override
public long getPrecision() {
return PRECISION;
}
@Override
public int getSignum() {
return Integer.signum(ordinal);
}
@Override
public String getSQL() {
return getString();
}
@Override
public String getString() {
return label;
}
@Override
public int getType() {
return Value.ENUM;
}
@Override
public int hashCode() {
int results = 31;
results += getString().hashCode();
results += getInt();
return results;
}
@Override
public Value modulus(final Value v) {
final Value iv = v.convertTo(Value.INT);
return convertTo(Value.INT).modulus(iv);
}
@Override
public Value multiply(final Value v) {
final Value iv = v.convertTo(Value.INT);
return convertTo(Value.INT).multiply(iv);
}
@Override
public void set(final PreparedStatement prep, final int parameterIndex)
throws SQLException {
prep.setInt(parameterIndex, ordinal);
}
@Override
public Value subtract(final Value v) {
final Value iv = v.convertTo(Value.INT);
return convertTo(Value.INT).subtract(iv);
}
}