FunctionInfo.java

/*
 * Copyright 2014-2015 the original author or authors
 *
 * 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.wplatform.ddal.command.expression;

/**
 * This class contains information about a built-in function.
 */
class FunctionInfo {

    /**
     * The name of the function.
     */
    String name;

    /**
     * The function type.
     */
    int type;

    /**
     * The data type of the return value.
     */
    int dataType;

    /**
     * The number of parameters.
     */
    int parameterCount;

    /**
     * If the result of the function is NULL if any of the parameters is NULL.
     */
    boolean nullIfParameterIsNull;

    /**
     * If this function always returns the same value for the same parameters.
     */
    boolean deterministic;

    /**
     * Should the return value ResultSet be buffered in a local temporary file?
     */
    boolean bufferResultSetToLocalTemp = true;

}