org.teiid.query.function
Class FunctionTree

java.lang.Object
  org.teiid.query.function.FunctionTree

public class FunctionTree
extends java.lang.Object

Data structure used to store function signature information. There are multiple uses of this signature information so there are multiple data structures within the FunctionTree for handling each. One type of information is the function metadata required by users of this class for data driving GUIs or function selection. The other type of information is that needed to quickly find and/or invoke the functions at execution time. In general all methods are concerned with function metadata EXCEPT getFunction(java.lang.String, java.lang.Class[]) which is used to find a function for execution.

Constructor Summary

FunctionTree(java.lang.String name, FunctionMetadataSource source)
Construct a new tree with the given source of function metadata.

FunctionTree(java.lang.String name, FunctionMetadataSource source, boolean validateClass)
Construct a new tree with the given source of function metadata.

Method Summary

FunctionDescriptor

addFunction(java.lang.String schema, FunctionMetadataSource source, FunctionMethod method) Store the method for function resolution and invocation.

Methods inherited from class java.lang.Object

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

Constructor Detail

FunctionTree

public FunctionTree(java.lang.String name,
                    FunctionMetadataSource source)

Construct a new tree with the given source of function metadata.

Parameters:

source - The metadata source

FunctionTree

public FunctionTree(java.lang.String name,
                    FunctionMetadataSource source,
                    boolean validateClass)

Construct a new tree with the given source of function metadata.

Parameters:

source - The metadata source

Method Detail

addFunction

public FunctionDescriptor addFunction(java.lang.String schema,
                                      FunctionMetadataSource source,
                                      FunctionMethod method)

Store the method for function resolution and invocation.

Parameters:

source - The function metadata source, which knows how to obtain the invocation class

method - The function metadata for a particular method signature