WindowDefinitionNode (Apache Derby V10.14 Internals)

java.lang.Object
- org.apache.derby.impl.sql.compile.QueryTreeNode
- - org.apache.derby.impl.sql.compile.WindowNode
  - - org.apache.derby.impl.sql.compile.WindowDefinitionNode

All Implemented Interfaces:

Visitable
```
public final class WindowDefinitionNode
extends WindowNode
```
This class represents an OLAP window definition.

Field Summary

Fields
Modifier and Type	Field	Description
`private boolean`	`inlined`	True of the window definition was inlined.
`private OrderByList`	`orderByList`	The order by list if the window definition contains a , else null.

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

Constructor Summary

Constructors
Constructor Description

WindowDefinitionNode(java.lang.String windowName, OrderByList orderByList, ContextManager cm)
Constructor.

Constructors
Constructor	Description
`WindowDefinitionNode(java.lang.String windowName, OrderByList orderByList, ContextManager cm)`	Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`(package private) WindowDefinitionNode`	`findEquivalentWindow(WindowList wl)`	Used to merge equivalent window definitions.
`(package private) OrderByList`	`getOrderByList()`
`private boolean`	`isEquivalent(WindowDefinitionNode other)`
`void`	`printSubNodes(int depth)`	QueryTreeNode override.
`java.lang.String`	`toString()`	java.lang.Object override.

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, generate, 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, isAtomic, isPrivilegeCollectionRequired, isSessionSchema, isSessionSchema, makeConstantAction, makeTableName, makeTableName, nodeHeader, optimizerTracingIsOn, orReliability, parseSearchCondition, parseStatement, printLabel, referencesSessionSchema, resolveTableToSynonym, setBeginOffset, setEndOffset, setRefActionInfo, stackPrint, taggedWith, treePrint, treePrint, verifyClassExist

Methods inherited from class org.apache.derby.impl.sql.compile.WindowNode
getName

- Field Detail
  - inlined
```
private boolean inlined
```
    True of the window definition was inlined.
  - orderByList
```
private OrderByList orderByList
```
    The order by list if the window definition contains a , else null.
- Constructor Detail
  - WindowDefinitionNode
```
WindowDefinitionNode(java.lang.String windowName,
                     OrderByList orderByList,
                     ContextManager cm)
              throws StandardException
```
    Constructor.
    
    Parameters:
    
    windowName - The window name, null if in-lined definition
    
    orderByList - ORDER BY list
    
    cm - The context manager
    
    Throws:
    
    StandardException
- Method Detail
  - toString
```
public java.lang.String toString()
```
    java.lang.Object override.
    
    Overrides:
    
    toString in class QueryTreeNode
    
    Returns:
    
    This node formatted as a String
    
    See Also:
    
    QueryTreeNode.toString()
  - printSubNodes
```
public void printSubNodes(int depth)
```
    QueryTreeNode override. Prints the sub-nodes of this object.
    
    Overrides:
    
    printSubNodes in class QueryTreeNode
    
    Parameters:
    
    depth - The depth of this node in the tree
    
    See Also:
    
    QueryTreeNode.printSubNodes(int)
  - findEquivalentWindow
```
WindowDefinitionNode findEquivalentWindow(WindowList wl)
```
    Used to merge equivalent window definitions.
    
    Parameters:
    
    wl - list of window definitions
    
    Returns:
    
    an existing window definition from wl, if 'this' is equivalent to a window in wl.
  - isEquivalent
```
private boolean isEquivalent(WindowDefinitionNode other)
```
    Returns:
    
    true if the window specifications are equal; no need to create more than one window then.
  - getOrderByList
```
OrderByList getOrderByList()
```
    Returns:
    
    the order by list of this window definition if any, else null.

Class WindowDefinitionNode

Field Summary

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

Constructor Summary

Method Summary

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.WindowNode

Field Detail

inlined

orderByList

Constructor Detail

WindowDefinitionNode

Method Detail

toString

printSubNodes

findEquivalentWindow

isEquivalent

getOrderByList