org.apache.derby.impl.sql.compile

Class SetSchemaNode

java.lang.Object

org.apache.derby.impl.sql.compile.QueryTreeNode

org.apache.derby.impl.sql.compile.StatementNode

org.apache.derby.impl.sql.compile.MiscellaneousStatementNode

org.apache.derby.impl.sql.compile.SetSchemaNode

All Implemented Interfaces:

Node, Visitable

public class SetSchemaNode
extends MiscellaneousStatementNode

A SetSchemaNode is the root of a QueryTree that represents a SET SCHEMA statement. It isn't replicated, but it generates a ConstantAction because it is basically easier than generating the code from scratch.

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.String	name
private int	type

Fields inherited from class org.apache.derby.impl.sql.compile.StatementNode

EMPTY_TD_LIST, NEED_CURSOR_ACTIVATION, NEED_DDL_ACTIVATION, NEED_NOTHING_ACTIVATION, NEED_PARAM_ACTIVATION, NEED_ROW_ACTIVATION

Fields inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode

AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX

Constructor Summary

Constructors

Constructor and Description
SetSchemaNode()

Method Summary

Methods

Modifier and Type	Method and Description
(package private) int	activationKind() Returns the type of activation this class generates.
void	generate(ActivationClassBuilder acb, MethodBuilder mb) Generate code, need to push parameters
(package private) void	generateParameterValueSet(ActivationClassBuilder acb) Generate the code to create the ParameterValueSet, if necessary, when constructing the activation.
void	init(java.lang.Object schemaName, java.lang.Object type) Initializer for a SetSchemaNode
ConstantAction	makeConstantAction() Create the Constant information that will drive the guts of Execution.
java.lang.String	statementToString()
java.lang.String	toString() Convert this object to a String.

Methods inherited from class org.apache.derby.impl.sql.compile.MiscellaneousStatementNode

needsSavepoint

Methods inherited from class org.apache.derby.impl.sql.compile.StatementNode

bindStatement, executeSchemaName, executeStatementName, generate, getSPSName, isAtomic, lockTableForCompilation, makeResultDescription, optimizeStatement, updateIndexStatisticsFor

Methods inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode

accept, acceptChildren, bindOffsetFetch, bindRowMultiSet, bindUserCatalogType, bindUserType, checkReliability, checkReliability, convertDefaultNode, createTypeDependency, debugFlush, debugPrint, disablePrivilegeCollection, formatNodeString, foundString, generateAuthorizeCheck, getBeginOffset, getClassFactory, getCompilerContext, getContextManager, getCursorInfo, getDataDictionary, getDependencyManager, getEndOffset, getExecutionFactory, getGenericConstantActionFactory, getIntProperty, getLanguageConnectionContext, getNodeFactory, getNodeType, getNullNode, getParameterTypes, getSchemaDescriptor, getSchemaDescriptor, getStatementType, getTableDescriptor, getTypeCompiler, init, init, init, init, init, init, init, init, init, init, init, init, init, isInstanceOf, isPrivilegeCollectionRequired, isSessionSchema, isSessionSchema, makeTableName, makeTableName, nodeHeader, orReliability, parseStatement, printLabel, printSubNodes, referencesSessionSchema, resolveTableToSynonym, setBeginOffset, setContextManager, setEndOffset, setNodeType, setRefActionInfo, stackPrint, treePrint, treePrint, verifyClassExist

Methods inherited from class java.lang.Object

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

Field Detail

name

private java.lang.String name

type

private int type

Constructor Detail

SetSchemaNode

public SetSchemaNode()

Method Detail

init

public void init(java.lang.Object schemaName,
        java.lang.Object type)

Initializer for a SetSchemaNode

Specified by:

init in interface Node

Overrides:

init in class QueryTreeNode

Parameters:

schemaName - The name of the new schema

type - Type of schema name could be USER or dynamic parameter

toString

public java.lang.String toString()

Convert this object to a String. See comments in QueryTreeNode.java for how this should be done for tree printing.

Overrides:

toString in class StatementNode

Returns:

This object as a String

statementToString

public java.lang.String statementToString()

Specified by:

statementToString in class StatementNode

makeConstantAction

public ConstantAction makeConstantAction()
                                  throws StandardException

Create the Constant information that will drive the guts of Execution.

Overrides:

makeConstantAction in class QueryTreeNode

Throws:

StandardException - Thrown on failure

generate

public void generate(ActivationClassBuilder acb,
            MethodBuilder mb)
              throws StandardException

Generate code, need to push parameters

Overrides:

generate in class MiscellaneousStatementNode

Parameters:

acb - The ActivationClassBuilder for the class being built

mb - the method for the execute() method to be built

Throws:

StandardException - Thrown on error

generateParameterValueSet

void generateParameterValueSet(ActivationClassBuilder acb)
                         throws StandardException

Generate the code to create the ParameterValueSet, if necessary, when constructing the activation. Also generate the code to call a method that will throw an exception if we try to execute without all the parameters being set.

Parameters:

acb - The ActivationClassBuilder for the class we're building

Throws:

StandardException

activationKind

int activationKind()

Returns the type of activation this class generates.

Overrides:

activationKind in class MiscellaneousStatementNode

Returns:

NEED_PARAM_ACTIVATION or NEED_NOTHING_ACTIVATION depending on params