com.hazelcast.query.impl.TypeConverters Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2013, Hazelcast, Inc. All Rights Reserved.
*
* 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.hazelcast.query.impl;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.sql.Timestamp;
import java.util.Date;
final class TypeConverters {
public static final TypeConverter BIG_INTEGER_CONVERTER = new BigIntegerConverter();
public static final TypeConverter BIG_DECIMAL_CONVERTER = new BigDecimalConverter();
public static final TypeConverter DOUBLE_CONVERTER = new DoubleConverter();
public static final TypeConverter LONG_CONVERTER = new LongConverter();
public static final TypeConverter INTEGER_CONVERTER = new IntegerConverter();
public static final TypeConverter BOOLEAN_CONVERTER = new BooleanConverter();
public static final TypeConverter SHORT_CONVERTER = new ShortConverter();
public static final TypeConverter FLOAT_CONVERTER = new FloatConverter();
public static final TypeConverter STRING_CONVERTER = new StringConverter();
public static final TypeConverter CHAR_CONVERTER = new CharConverter();
public static final TypeConverter BYTE_CONVERTER = new ByteConverter();
public static final TypeConverter ENUM_CONVERTER = new EnumConverter();
public static final TypeConverter SQL_DATE_CONVERTER = new SqlDateConverter();
public static final TypeConverter SQL_TIMESTAMP_CONVERTER = new SqlTimestampConverter();
public static final TypeConverter DATE_CONVERTER = new DateConverter();
private TypeConverters() {
}
public interface TypeConverter {
Comparable convert(Comparable value);
}
static class EnumConverter implements TypeConverter {
@Override
public Comparable convert(Comparable value) {
if (value == null) {
return null;
}
String enumString = value.toString();
if (enumString.contains(".")) {
// there is a dot in the value specifier, keep part after last dot
enumString = enumString.substring(1 + enumString.lastIndexOf('.'));
}
return enumString;
}
}
static class SqlDateConverter implements TypeConverter {
@Override
public Comparable convert(Comparable value) {
if (value instanceof java.sql.Date) {
return value;
}
if (value instanceof String) {
return DateHelper.parseSqlDate((String) value);
}
if (value instanceof Number) {
Number number = (Number) value;
return new java.sql.Date(number.longValue());
}
throw new IllegalArgumentException("Cannot convert [" + value + "] to java.sql.Date");
}
}
static class SqlTimestampConverter implements TypeConverter {
@Override
public Comparable convert(Comparable value) {
if (value instanceof Timestamp) {
return value;
}
if (value instanceof String) {
return DateHelper.parseTimeStamp((String) value);
}
if (value instanceof Number) {
Number number = (Number) value;
return new Timestamp(number.longValue());
}
throw new IllegalArgumentException("Cannot convert [" + value + "] to java.sql.Timestamp");
}
}
static class DateConverter implements TypeConverter {
@Override
public Comparable convert(Comparable value) {
if (value instanceof Date) {
return value;
}
if (value instanceof String) {
return DateHelper.parseDate((String) value);
}
if (value instanceof Number) {
Number number = (Number) value;
return new Date(number.longValue());
}
throw new IllegalArgumentException("Cannot convert [" + value + "] to java.util.Date");
}
}
static class DoubleConverter implements TypeConverter {
@Override
public Comparable convert(Comparable value) {
if (value instanceof Double) {
return value;
}
if (value instanceof String) {
return Double.parseDouble((String) value);
}
if (value instanceof Number) {
Number number = (Number) value;
return number.doubleValue();
}
throw new IllegalArgumentException("Cannot convert [" + value + "] to double");
}
}
static class LongConverter implements TypeConverter {
@Override
public Comparable convert(Comparable value) {
if (value instanceof Long) {
return value;
}
if (value instanceof String) {
return Long.parseLong((String) value);
}
if (value instanceof Number) {
Number number = (Number) value;
return number.longValue();
}
throw new IllegalArgumentException("Cannot convert [" + value + "] to long");
}
}
static class BigIntegerConverter implements TypeConverter {
@Override
public Comparable convert(Comparable value) {
if (value instanceof BigInteger) {
return value;
}
return new BigInteger(value.toString());
}
}
static class BigDecimalConverter implements TypeConverter {
@Override
public Comparable convert(Comparable value) {
if (value instanceof BigDecimal) {
return value;
}
if (value instanceof BigInteger) {
return new BigDecimal((BigInteger) value);
}
return new BigDecimal(value.toString());
}
}
static class IntegerConverter implements TypeConverter {
@Override
public Comparable convert(Comparable value) {
if (value instanceof Integer) {
return value;
}
if (value instanceof String) {
return Integer.parseInt((String) value);
}
if (value instanceof Number) {
Number number = (Number) value;
return number.intValue();
}
throw new IllegalArgumentException("Cannot convert [" + value + "] to integer");
}
}
static class StringConverter implements TypeConverter {
@Override
public Comparable convert(Comparable value) {
if (value instanceof String) {
return value;
}
if (value == null) {
return IndexImpl.NULL;
}
return value.toString();
}
}
static class FloatConverter implements TypeConverter {
@Override
public Comparable convert(Comparable value) {
if (value instanceof Float) {
return value;
}
if (value instanceof String) {
return Float.parseFloat((String) value);
}
if (value instanceof Number) {
Number number = (Number) value;
return number.floatValue();
}
throw new IllegalArgumentException("Cannot convert [" + value + "] to float");
}
}
static class ShortConverter implements TypeConverter {
@Override
public Comparable convert(Comparable value) {
if (value instanceof Short) {
return value;
}
if (value instanceof String) {
return Short.parseShort((String) value);
}
if (value instanceof Number) {
Number number = (Number) value;
return number.shortValue();
}
throw new IllegalArgumentException("Cannot convert [" + value + "] to short");
}
}
static class BooleanConverter implements TypeConverter {
@Override
public Comparable convert(Comparable value) {
if (value instanceof Boolean) {
return value;
}
if (value instanceof String) {
return Boolean.parseBoolean((String) value);
}
if (value instanceof Number) {
Number number = (Number) value;
return number.intValue() != 0;
}
throw new IllegalArgumentException("Cannot convert [" + value + "] to boolean");
}
}
static class ByteConverter implements TypeConverter {
@Override
public Comparable convert(Comparable value) {
if (value instanceof Byte) {
return value;
}
if (value instanceof String) {
return Byte.parseByte((String) value);
}
if (value instanceof Number) {
Number number = (Number) value;
return number.byteValue();
}
throw new IllegalArgumentException("Cannot convert [" + value + "] to byte");
}
}
static class CharConverter implements TypeConverter {
@Override
public Comparable convert(Comparable value) {
if (value.getClass() == char.class) {
return value;
}
if (value instanceof Character) {
return value;
}
if (value instanceof String) {
return ((String) value).charAt(0);
}
if (value instanceof Number) {
Number number = (Number) value;
return number.intValue();
}
throw new IllegalArgumentException("Cannot convert [" + value + "] to char");
}
}
}