Package org.apache.ignite.internal.processors.query.h2.sql

Class GridSqlElement

java.lang.Object

org.apache.ignite.internal.processors.query.h2.sql.GridSqlElement

All Implemented Interfaces:

GridSqlAst

Direct Known Subclasses:

GridSqlAlias, GridSqlArray, GridSqlColumn, GridSqlConst, GridSqlFunction, GridSqlJoin, GridSqlKeyword, GridSqlOperation, GridSqlParameter, GridSqlPlaceholder, GridSqlSubquery, GridSqlTable

public abstract class GridSqlElement
extends Object
implements GridSqlAst

Base class for all SQL AST nodes.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	GridSqlElement(List<GridSqlAst> children)

Method Summary

Modifier and Type	Method	Description
GridSqlElement	addChild(GridSqlAst expr)
<E extends GridSqlAst> E	child()	Get the first child.
<E extends GridSqlAst> E	child(int idx)	Get child by index.
<E extends GridSqlAst> void	child(int idx, E child)	Set child.
boolean	equals(Object o)
int	hashCode()
GridSqlType	resultType()
GridSqlElement	resultType(GridSqlType type)
int	size()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.ignite.internal.processors.query.h2.sql.GridSqlAst

getSQL

Constructor Detail

GridSqlElement

protected GridSqlElement(List<GridSqlAst> children)

Parameters:

children - Initial child list.

Method Detail

resultType

public GridSqlType resultType()

Specified by:

resultType in interface GridSqlAst

Returns:

Optional expression result type (if this is an expression and result type is known).

resultType

public GridSqlElement resultType(GridSqlType type)

Parameters:

type - Optional expression result type (if this is an expression and result type is known).

Returns:

this.

addChild

public GridSqlElement addChild(GridSqlAst expr)

Parameters:

expr - Expr.

Returns:

this.

child

public <E extends GridSqlAst> E child()

Get the first child.

Specified by:

child in interface GridSqlAst

Returns:

Child element.

child

public <E extends GridSqlAst> E child(int idx)

Get child by index.

Specified by:

child in interface GridSqlAst

Parameters:

idx - Index of the requested child.

Returns:

Child element.

child

public <E extends GridSqlAst> void child(int idx,
                                         E child)

Set child.

Specified by:

child in interface GridSqlAst

Parameters:

idx - Index of the requested child.

child - Child element.

size

public int size()

Specified by:

size in interface GridSqlAst

Returns:

Number of child nodes.

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object