org.h2.mode

类 FunctionInfo

java.lang.Object

org.h2.mode.FunctionInfo

public final class FunctionInfo
extends Object

This class contains information about a built-in function.

字段概要

字段

限定符和类型	字段和说明
boolean	deterministic If this function always returns the same value for the same parameters.
String	name The name of the function.
boolean	nullIfParameterIsNull If the result of the function is NULL if any of the parameters is NULL.
int	returnDataType The data type of the return value.
int	type The function type.

构造器概要

构造器

构造器和说明
FunctionInfo(FunctionInfo source, String name) Creates a copy of built-in function information with a different name.
FunctionInfo(String name, int type, int parameterCount, int returnDataType, boolean nullIfParameterIsNull, boolean deterministic) Creates new instance of built-in function information.

方法概要

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

name

public final String name

The name of the function.

type

public final int type

The function type.

returnDataType

public final int returnDataType

The data type of the return value.

nullIfParameterIsNull

public final boolean nullIfParameterIsNull

If the result of the function is NULL if any of the parameters is NULL.

deterministic

public final boolean deterministic

If this function always returns the same value for the same parameters.

构造器详细资料

FunctionInfo

public FunctionInfo(String name,
                    int type,
                    int parameterCount,
                    int returnDataType,
                    boolean nullIfParameterIsNull,
                    boolean deterministic)

Creates new instance of built-in function information.

参数:

name - the name of the function

type - the function type

parameterCount - the number of parameters

returnDataType - the data type of the return value

nullIfParameterIsNull - if the result of the function is NULL if any of the parameters is NULL

deterministic - if this function always returns the same value for the same parameters

FunctionInfo

public FunctionInfo(FunctionInfo source,
                    String name)

Creates a copy of built-in function information with a different name. A copy will require parentheses.

参数:

source - the source information

name - the new name