org.h2.schema

类 FunctionAlias

java.lang.Object

org.h2.engine.DbObject

org.h2.schema.SchemaObject

org.h2.schema.UserDefinedFunction

org.h2.schema.FunctionAlias

所有已实现的接口:

HasSQL

public final class FunctionAlias
extends UserDefinedFunction

Represents a user-defined function, or alias.

作者:

Thomas Mueller, Gary Tong

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	FunctionAlias.JavaMethod There may be multiple Java methods that match a function name.

字段概要

从类继承的字段 org.h2.engine.DbObject

AGGREGATE, comment, COMMENT, CONSTANT, CONSTRAINT, database, DOMAIN, FUNCTION_ALIAS, INDEX, RIGHT, ROLE, SCHEMA, SEQUENCE, SETTING, SYNONYM, TABLE_OR_VIEW, trace, TRIGGER, USER

从接口继承的字段 org.h2.util.HasSQL

ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS

方法概要

限定符和类型	方法和说明
FunctionAlias.JavaMethod	findJavaMethod(Expression[] args) Find the Java method that matches the arguments.
String	getCreateSQL() Construct the CREATE ...
String	getDropSQL() Construct a DROP ...
String	getJavaMethodName()
FunctionAlias.JavaMethod[]	getJavaMethods() Get the Java methods mapped by this function.
String	getSource()
int	getType() Get the object type.
boolean	isDeterministic()
static FunctionAlias	newInstance(Schema schema, int id, String name, String javaClassMethod, boolean force) Create a new alias based on a method name.
static FunctionAlias	newInstanceFromSource(Schema schema, int id, String name, String source, boolean force) Create a new alias based on source code.
void	removeChildrenAndResources(SessionLocal session) Delete all dependent children objects and resources of this object.
void	setDeterministic(boolean deterministic)

从类继承的方法 org.h2.schema.UserDefinedFunction

checkRename, getJavaClassName

从类继承的方法 org.h2.schema.SchemaObject

getSchema, getSQL, getSQL, isHidden

从类继承的方法 org.h2.engine.DbObject

getChildren, getComment, getCreateSQLForCopy, getCreateSQLForMeta, getDatabase, getId, getModificationId, getName, invalidate, isTemporary, isValid, rename, setComment, setModified, setObjectName, setTemporary, toString

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.h2.util.HasSQL

getTraceSQL

方法详细资料

newInstance

public static FunctionAlias newInstance(Schema schema,
                                        int id,
                                        String name,
                                        String javaClassMethod,
                                        boolean force)

Create a new alias based on a method name.

参数:

schema - the schema

id - the id

name - the name

javaClassMethod - the class and method name

force - create the object even if the class or method does not exist

返回:

the database object

newInstanceFromSource

public static FunctionAlias newInstanceFromSource(Schema schema,
                                                  int id,
                                                  String name,
                                                  String source,
                                                  boolean force)

Create a new alias based on source code.

参数:

schema - the schema

id - the id

name - the name

source - the source code

force - create the object even if the class or method does not exist

返回:

the database object

getDropSQL

public String getDropSQL()

从类复制的说明: DbObject

Construct a DROP ... SQL statement for this object.

覆盖:

getDropSQL 在类中 DbObject

返回:

the SQL statement

getCreateSQL

public String getCreateSQL()

从类复制的说明: DbObject

Construct the CREATE ... SQL statement for this object.

指定者:

getCreateSQL 在类中 DbObject

返回:

the SQL statement

getType

public int getType()

从类复制的说明: DbObject

Get the object type.

指定者:

getType 在类中 DbObject

返回:

the object type

removeChildrenAndResources

public void removeChildrenAndResources(SessionLocal session)

从类复制的说明: DbObject

Delete all dependent children objects and resources of this object.

指定者:

removeChildrenAndResources 在类中 DbObject

参数:

session - the session

findJavaMethod

public FunctionAlias.JavaMethod findJavaMethod(Expression[] args)

Find the Java method that matches the arguments.

参数:

args - the argument list

返回:

the Java method

抛出:

DbException - if no matching method could be found

getJavaMethodName

public String getJavaMethodName()

getJavaMethods

public FunctionAlias.JavaMethod[] getJavaMethods()

Get the Java methods mapped by this function.

返回:

the Java methods.

setDeterministic

public void setDeterministic(boolean deterministic)

isDeterministic

public boolean isDeterministic()

getSource

public String getSource()