com.foundationdb.sql.parser

Class SelectNode

java.lang.Object

com.foundationdb.sql.parser.QueryTreeNode

com.foundationdb.sql.parser.ResultSetNode

com.foundationdb.sql.parser.SelectNode

All Implemented Interfaces:

Visitable

public class SelectNode
extends ResultSetNode

A SelectNode represents the result set for any of the basic DML operations: SELECT, INSERT, UPDATE, and DELETE. (A RowResultSetNode will be used for an INSERT with a VALUES clause.) For INSERT - SELECT, any of the fields in a SelectNode can be used (the SelectNode represents the SELECT statement in the INSERT - SELECT). For UPDATE and DELETE, there will be one table in the fromList, and the groupByList fields will be null. For both INSERT and UPDATE, the resultColumns in the selectList will contain the names of the columns being inserted into or updated.

Field Summary

Fields inherited from class com.foundationdb.sql.parser.QueryTreeNode

AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX

Constructor Summary

Constructors

Constructor and Description
SelectNode()

Method Summary

Methods

Modifier and Type	Method and Description
void	clearDistinct()
void	copyFrom(QueryTreeNode node) Fill this node with a deep copy of the given node.
Boolean	getCacheHint()
FromList	getFromList() Return the fromList for this SelectNode.
GroupByList	getGroupByList()
ValueNode	getHavingClause()
ValueNode	getWhereClause() Return the whereClause for this SelectNode.
WindowList	getWindows()
boolean	hasWindows() Used by SubqueryNode to avoid flattening of a subquery if a window is defined on it.
void	init(Object selectList, Object aggregateList, Object fromList, Object whereClause, Object groupByList, Object havingClause, Object windowDefinitionList) Initialize a query tree node.
boolean	isDistinct()
boolean	isStraightJoin()
void	makeDistinct()
void	makeStraightJoin()
void	printSubNodes(int depth) Prints the sub-nodes of this object.
void	setCacheHint(Boolean cacheHint)
void	setHavingClause(ValueNode havingClause)
void	setWhereClause(ValueNode whereClause)
String	statementToString()
String	toString() Convert this object to a String.

Methods inherited from class com.foundationdb.sql.parser.ResultSetNode

getResultColumns, setInsertSource, setResultColumns

Methods inherited from class com.foundationdb.sql.parser.QueryTreeNode

accept, convertDefaultNode, debugFlush, debugPrint, formatNodeString, getBeginOffset, getDebugOutput, getEndOffset, getNodeFactory, getNodeType, getNullNode, getParserContext, getStatementType, getUserData, init, init, init, init, init, init, init, init, init, init, init, init, init, isInstanceOf, makeTableName, makeTableName, nodeHeader, printLabel, setBeginOffset, setDebugOutput, setEndOffset, setNodeType, setParserContext, setUserData, stackPrint, treePrint, treePrint, treePrint

Methods inherited from class java.lang.Object

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

Constructor Detail

SelectNode

public SelectNode()

Method Detail

init

public void init(Object selectList,
        Object aggregateList,
        Object fromList,
        Object whereClause,
        Object groupByList,
        Object havingClause,
        Object windowDefinitionList)
          throws StandardException

Description copied from class: QueryTreeNode

Initialize a query tree node.

Overrides:

init in class QueryTreeNode

Throws:

StandardException - Thrown on error

copyFrom

public void copyFrom(QueryTreeNode node)
              throws StandardException

Fill this node with a deep copy of the given node.

Overrides:

copyFrom in class ResultSetNode

Throws:

StandardException

toString

public 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 ResultSetNode

Returns:

This object as a String

statementToString

public String statementToString()

makeDistinct

public void makeDistinct()

clearDistinct

public void clearDistinct()

isDistinct

public boolean isDistinct()

makeStraightJoin

public void makeStraightJoin()

isStraightJoin

public boolean isStraightJoin()

setCacheHint

public void setCacheHint(Boolean cacheHint)

getCacheHint

public Boolean getCacheHint()

printSubNodes

public void printSubNodes(int depth)

Prints the sub-nodes of this object. See QueryTreeNode.java for how tree printing is supposed to work.

Overrides:

printSubNodes in class ResultSetNode

Parameters:

depth - The depth of this node in the tree

getFromList

public FromList getFromList()

Return the fromList for this SelectNode.

Returns:

FromList The fromList for this SelectNode.

getWhereClause

public ValueNode getWhereClause()

Return the whereClause for this SelectNode.

Returns:

ValueNode The whereClause for this SelectNode.

setWhereClause

public void setWhereClause(ValueNode whereClause)

getGroupByList

public GroupByList getGroupByList()

getHavingClause

public ValueNode getHavingClause()

setHavingClause

public void setHavingClause(ValueNode havingClause)

hasWindows

public boolean hasWindows()

Used by SubqueryNode to avoid flattening of a subquery if a window is defined on it. Note that any inline window definitions should have been collected from both the selectList and orderByList at the time this method is called, so the windows list is complete. This is true after preprocess is completed.

Returns:

true if this select node has any windows on it

getWindows

public WindowList getWindows()