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A Speedment bundle that shades all dependencies into one jar. This is
useful when deploying an application on a server.
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/*
*
* Copyright (c) 2006-2019, Speedment, 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.speedment.runtime.compute.expression;
/**
* Every expression type has a corresponding interface to get a type-safe way of
* applying the expression without boxing any values. This enumeration can be
* used to tell which type an expression has.
*
* @author Emil Forslund
* @since 3.1.0
*/
public enum ExpressionType {
BYTE, BYTE_NULLABLE(true),
SHORT, SHORT_NULLABLE(true),
INT, INT_NULLABLE(true),
LONG, LONG_NULLABLE(true),
FLOAT, FLOAT_NULLABLE(true),
DOUBLE, DOUBLE_NULLABLE(true),
CHAR, CHAR_NULLABLE(true),
BOOLEAN, BOOLEAN_NULLABLE(true),
ENUM, ENUM_NULLABLE(true),
STRING, STRING_NULLABLE(true),
BIG_DECIMAL, BIG_DECIMAL_NULLABLE(true);
private final boolean isNullable;
ExpressionType() {
this(false);
}
ExpressionType(boolean isNullable) {
this.isNullable = isNullable;
}
/**
* Returns {@code true} if this type is one of the nullable types, and
* otherwise {@code false}
*
* @return {@code true} if expression result may be {@code null}
*/
public boolean isNullable() {
return isNullable;
}
}