org.axiondb.engine.commands

Class AxionQueryContext

public class AxionQueryContext extends Object

AxionQueryContext holds metadata for the Query or Sub-Query.

Version: $Revision: 1.13 $ $Date: 2005/12/20 18:32:28 $

Author: Ahimanikya Satapathy

Constructor Summary
	AxionQueryContext()

Method Summary
void	addAllSelectToResolvedSelect()
void	addFrom(TableIdentifier table) Adds a TableIdentifierto the list of tables being selected from.
void	addOrderBy(OrderNode orderby) Appends an OrderNodeto the order by clause for this query
void	addSelect(Selectable column) Adds a Selectableto the list of items being selected.
List	createLiteralList()
boolean	foundAggregateFunction()
String	getAliasName()
boolean	getDistinct() Indicates if the java.sql.ResultSetgenerated from this object will contain distinct tuples.
FromNode	getFrom() Gets the root FromNodefor the select statement.
TableIdentifier	getFrom(int i) Gets the i ^th table being selected.
TableIdentifier[]	getFromArray()
int	getFromCount() Gets the number of tables being from.
List	getGroupBy() Gets Selectable in Group by clause.
Selectable	getGroupBy(int i) Gets Selectable in Group by clause.
int	getGroupByCount() Gets the number of Slectables group by in my query.
Selectable	getHaving()
Literal	getLimit()
Literal	getOffset()
List	getOrderBy() Gets the List of OrderNodein my order by clause.
OrderNode	getOrderBy(int i) Gets the i ^th OrderNodein my order by clause.
int	getOrderByCount() Gets the number of OrderNodes in my query.
RowDecorator	getParentRow()
TableIdentifier[]	getParentTables()
List	getResolvedSelect()
RowIterator	getRows()
List	getSelect()
Selectable	getSelect(int i) Gets the i ^th Selectablebeing selected.
int	getSelectCount() Gets the number of Selectables being selected.
Selectable[]	getSelected()
int	getTableCount()
TableIdentifier[]	getTables()
TableIdentifier	getTables(int i)
Selectable	getWhere() Returns the `where tree`for this query.
boolean	isCorrelatedSubQuery()
boolean	isExplain()
boolean	isResolved()
boolean	isTablePartOfSelect(TableIdentifier tid)
void	setAliasName(String name)
void	setCorrelatedSubQuery(boolean isCorrelatedSubQuery)
void	setDistinct(boolean distinct) Determines if the java.sql.ResultSetgenerated from this object will contain distinct tuples (default is false).
void	setExplain(boolean explain)
void	setFoundAggregateFunction(boolean found)
void	setFrom(FromNode from) Sets the root FromNodefor the select statement.
void	setGroupBy(List groupby) Sets the group by clause for this query.
void	setHaving(Selectable having)
void	setLimit(Literal limit)
void	setOffset(Literal offset)
void	setOrderBy(List orderby) Sets the order by clause for this query.
void	setParentRow(RowDecorator row)
void	setParentTables(TableIdentifier[] tables)
void	setResolved(boolean resolved)
void	setResolvedSelect(List select)
void	setRows(RowIterator rows)
void	setSelect(int i, Selectable sel) Sets the i ^th Selectablebeing selected.
void	setSelect(List columns)
void	setSelected(Selectable[] selected)
void	setTables(TableIdentifier[] tables)
void	setWhere(Selectable where) Sets the `where tree`for this query.
String	toString()

Constructor Detail

AxionQueryContext

public AxionQueryContext()

Method Detail

addAllSelectToResolvedSelect

public void addAllSelectToResolvedSelect()

addFrom

public void addFrom(TableIdentifier table)

Adds a TableIdentifierto the list of tables being selected from.

Parameters: table a TableIdentifier

Throws: IllegalStateException if I have already been resolved

addOrderBy

public void addOrderBy(OrderNode orderby)

Appends an OrderNodeto the order by clause for this query

Parameters: orderby an OrderNodeto append

Throws: IllegalStateException if I have already been resolved

addSelect

public void addSelect(Selectable column)

Adds a Selectableto the list of items being selected.

Parameters: column the Selectableto add

Throws: IllegalStateException if I have already been resolved

createLiteralList

public List createLiteralList()

foundAggregateFunction

public boolean foundAggregateFunction()

getAliasName

public String getAliasName()

getDistinct

public boolean getDistinct()

Indicates if the java.sql.ResultSetgenerated from this object will contain distinct tuples.

Returns: true for distinct tuples

getFrom

public FromNode getFrom()

Gets the root FromNodefor the select statement.

getFrom

public TableIdentifier getFrom(int i)

Gets the i ^th table being selected. Clients should treat the returned value as immutable.

Parameters: i the zero-based index

getFromArray

public TableIdentifier[] getFromArray()

getFromCount

public int getFromCount()

Gets the number of tables being from.

getGroupBy

public List getGroupBy()

Gets Selectable in Group by clause.

getGroupBy

public Selectable getGroupBy(int i)

Gets Selectable in Group by clause. Clients should treat the returned value as immutable.

Parameters: i the zero-based index

getGroupByCount

public int getGroupByCount()

Gets the number of Slectables group by in my query.

getHaving

public Selectable getHaving()

getLimit

public Literal getLimit()

getOffset

public Literal getOffset()

getOrderBy

public List getOrderBy()

Gets the List of OrderNodein my order by clause.

getOrderBy

public OrderNode getOrderBy(int i)

Gets the i ^th OrderNodein my order by clause. Clients should treat the returned value as immutable.

Parameters: i the zero-based index

getOrderByCount

public int getOrderByCount()

Gets the number of OrderNodes in my query.

getParentRow

public RowDecorator getParentRow()

getParentTables

public TableIdentifier[] getParentTables()

getResolvedSelect

public List getResolvedSelect()

getRows

public RowIterator getRows()

getSelect

public List getSelect()

getSelect

public Selectable getSelect(int i)

Gets the i ^th Selectablebeing selected. Clients should treat the returned value as immutable.

Parameters: i the zero-based index

getSelectCount

public int getSelectCount()

Gets the number of Selectables being selected.

getSelected

public Selectable[] getSelected()

getTableCount

public int getTableCount()

getTables

public TableIdentifier[] getTables()

getTables

public TableIdentifier getTables(int i)

getWhere

public Selectable getWhere()

Returns the where treefor this query. Clients should treat the returned value as immutable.

Returns: the where treefor this query, or null.

isCorrelatedSubQuery

public boolean isCorrelatedSubQuery()

isExplain

public boolean isExplain()

isResolved

public boolean isResolved()

isTablePartOfSelect

public boolean isTablePartOfSelect(TableIdentifier tid)

setAliasName

public void setAliasName(String name)

setCorrelatedSubQuery

public void setCorrelatedSubQuery(boolean isCorrelatedSubQuery)

setDistinct

public void setDistinct(boolean distinct)

Determines if the java.sql.ResultSetgenerated from this object will contain distinct tuples (default is false).

Parameters: distinct true for distinct tuples

setExplain

public void setExplain(boolean explain)

setFoundAggregateFunction

public void setFoundAggregateFunction(boolean found)

setFrom

public void setFrom(FromNode from)

Sets the root FromNodefor the select statement.

setGroupBy

public void setGroupBy(List groupby)

Sets the group by clause for this query.

Parameters: groupby a Listof Selectables.

Throws: IllegalStateException if I have already been resolved

setHaving

public void setHaving(Selectable having)

setLimit

public void setLimit(Literal limit)

setOffset

public void setOffset(Literal offset)

setOrderBy

public void setOrderBy(List orderby)

Sets the order by clause for this query.

Parameters: orderby a Listof OrderNodes.

Throws: IllegalStateException if I have already been resolved

setParentRow

public void setParentRow(RowDecorator row)

setParentTables

public void setParentTables(TableIdentifier[] tables)

setResolved

public void setResolved(boolean resolved)

setResolvedSelect

public void setResolvedSelect(List select)

setRows

public void setRows(RowIterator rows)

setSelect

public void setSelect(int i, Selectable sel)

Sets the i ^th Selectablebeing selected.

Parameters: i the zero-based index sel the new Selectable

Throws: IllegalStateException if I have already been resolved

setSelect

public void setSelect(List columns)

setSelected

public void setSelected(Selectable[] selected)

setTables

public void setTables(TableIdentifier[] tables)

setWhere

public void setWhere(Selectable where)

Sets the where treefor this query.

Parameters: where a boolean valued Selectable

Throws: IllegalStateException if I have already been resolved

toString

public String toString()