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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
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* under the License.
******************************************************************************/
package org.apache.olingo.odata2.api.uri.expression;
/**
* Enumeration describing all possible node types inside an expression tree
*
*/
public enum ExpressionKind {
/**
* Used to mark the root node of a filter expression tree
* @see FilterExpression
*/
FILTER,
/**
* Literal expressions like "1.1d" or "'This is a string'"
* @see LiteralExpression
*/
LITERAL,
/**
* Unary operator expressions like "not" and "-"
* @see UnaryExpression
*/
UNARY,
/**
* Binary operator expressions like "eq" and "or"
* @see BinaryExpression
*/
BINARY,
/**
* Method operator expressions like "substringof" and "concat"
* @see MethodExpression
*/
METHOD,
/**
* Member access expressions like "/" in "adress/street"
* @see MemberExpression
*/
MEMBER,
/**
* Property expressions like "age"
* @see PropertyExpression
*/
PROPERTY,
/**
* Order expressions like "age desc"
* @see OrderExpression
*/
ORDER,
/**
* Orderby expression like "age desc, name asc"
* @see OrderByExpression
*/
ORDERBY;
}