com.metamatrix.query.function.source
Class SystemSource

java.lang.Object
  com.metamatrix.query.function.source.SystemSource

All Implemented Interfaces:

FunctionMetadataSource, FunctionCategoryConstants

public class SystemSource
extends java.lang.Object
implements FunctionMetadataSource, FunctionCategoryConstants

This metadata source has metadata for the hard-coded system functions. All system functions are described by this metadata.

Field Summary

Fields inherited from interface com.metamatrix.query.function.metadata.FunctionCategoryConstants

CONVERSION, DATETIME, MISCELLANEOUS, NUMERIC, SECURITY, STRING, SYSTEM, XML

Constructor Summary

SystemSource()
Construct a source of system metadata.

Method Summary

java.util.Collection	getFunctionMethods() Get all function signatures for this metadata source.
java.lang.Class	getInvocationClass(java.lang.String className) Sources are returned from the system classpath.
void	loadFunctions(java.io.InputStream source) Never need to reload - do nothing.

Methods inherited from class java.lang.Object

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

Constructor Detail

SystemSource

public SystemSource()

Construct a source of system metadata.

Method Detail

getFunctionMethods

public java.util.Collection getFunctionMethods()

Get all function signatures for this metadata source.

Specified by:

getFunctionMethods in interface FunctionMetadataSource

Returns:

Unordered collection of FunctionMethods

getInvocationClass

public java.lang.Class getInvocationClass(java.lang.String className)
                                   throws java.lang.ClassNotFoundException

Sources are returned from the system classpath.

Specified by:

getInvocationClass in interface FunctionMetadataSource

Parameters:

className - Name of class

Returns:

Class reference

Throws:

java.lang.ClassNotFoundException - If class could not be found

loadFunctions

public void loadFunctions(java.io.InputStream source)
                   throws java.io.IOException

Never need to reload - do nothing.

Specified by:

loadFunctions in interface FunctionMetadataSource

Throws:

java.io.IOException