SetSchemaNode (Apache Derby V10.14 Internals)

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:

Visitable
```
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 Description

private java.lang.String name

private int type
- Fields inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode
  AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_CYCLE, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX
- 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
Modifier and Type	Field	Description
`private java.lang.String`	`name`
`private int`	`type`

Constructor Summary

Constructors
Constructor Description

SetSchemaNode(java.lang.String schemaName, int type, ContextManager cm)
Constructor for a SetSchemaNode

Constructors
Constructor	Description
`SetSchemaNode(java.lang.String schemaName, int type, ContextManager cm)`	Constructor for a SetSchemaNode

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`(package private) int`	`activationKind()`	Returns the type of activation this class generates.
`(package private) 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.
`ConstantAction`	`makeConstantAction()`	Create the Constant information that will drive the guts of Execution.
`(package private) 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 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode
accept, acceptChildren, addTag, addUDTUsagePriv, addUDTUsagePriv, bindOffsetFetch, bindRowMultiSet, bindUserCatalogType, bindUserType, checkReliability, checkReliability, convertDefaultNode, copyTagsFrom, createTypeDependency, debugFlush, debugPrint, disablePrivilegeCollection, formatNodeString, generateAuthorizeCheck, getBeginOffset, getClassFactory, getCompilerContext, getContext, getContextManager, getDataDictionary, getDependencyManager, getEndOffset, getExecutionFactory, getGenericConstantActionFactory, getIntProperty, getLanguageConnectionContext, getLongProperty, getNullNode, getOffsetOrderedNodes, getOptimizerFactory, getOptimizerTracer, getParameterTypes, getSchemaDescriptor, getSchemaDescriptor, getStatementType, getTableDescriptor, getTypeCompiler, getUDTDesc, isPrivilegeCollectionRequired, isSessionSchema, isSessionSchema, makeTableName, makeTableName, nodeHeader, optimizerTracingIsOn, orReliability, parseSearchCondition, parseStatement, printLabel, printSubNodes, referencesSessionSchema, resolveTableToSynonym, setBeginOffset, setEndOffset, setRefActionInfo, stackPrint, taggedWith, treePrint, treePrint, verifyClassExist

Methods inherited from class org.apache.derby.impl.sql.compile.StatementNode
bindStatement, executeSchemaName, executeStatementName, generate, getCursorInfo, getSPSName, isAtomic, lockTableForCompilation, makeResultDescription, optimizeStatement, updateIndexStatisticsFor

- Field Detail
  - name
```
private java.lang.String name
```
  - type
```
private int type
```
- Constructor Detail
  - SetSchemaNode
```
SetSchemaNode(java.lang.String schemaName,
              int type,
              ContextManager cm)
```
    Constructor for a SetSchemaNode
    
    Parameters:
    
    schemaName - The name of the new schema
    
    type - Type of schema name could be USER or dynamic parameter
    
    cm - The context manager
- Method Detail
  - 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
```
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
```
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

Class SetSchemaNode

Field Summary

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

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

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

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

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

Field Detail

name

type

Constructor Detail

SetSchemaNode

Method Detail

toString

statementToString

makeConstantAction

generate

generateParameterValueSet

activationKind