org.teiid.query.function

Class FunctionTree

java.lang.Object

org.teiid.query.function.FunctionTree

public class FunctionTree
extends 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

Constructors

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

Method Summary

Modifier and Type	Method and Description
FunctionDescriptor	addFunction(String schema, FunctionMetadataSource source, FunctionMethod method, boolean system) Store the method for function resolution and invocation.
static FunctionTree	getFunctionProcedures(Schema schema)
Map<String,FunctionMethod>	getFunctionsByUuid()
String	getSchemaName()
boolean	hasFunctionWithName(String name)

Methods inherited from class java.lang.Object

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

Constructor Detail

FunctionTree

public FunctionTree(String name,
                    FunctionMetadataSource source)

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

Parameters:

source - The metadata source

FunctionTree

public FunctionTree(String name,
                    FunctionMetadataSource source,
                    boolean validateClass)

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

Parameters:

source - The metadata source

Method Detail

getSchemaName

public String getSchemaName()

getFunctionsByUuid

public Map<String,FunctionMethod> getFunctionsByUuid()

addFunction

public FunctionDescriptor addFunction(String schema,
                                      FunctionMetadataSource source,
                                      FunctionMethod method,
                                      boolean system)

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

getFunctionProcedures

public static FunctionTree getFunctionProcedures(Schema schema)

hasFunctionWithName

public boolean hasFunctionWithName(String name)