Package com.mckoi.database.interpret

Class FromTableDef

java.lang.Object

com.mckoi.database.interpret.FromTableDef

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public final class FromTableDef
extends java.lang.Object
implements java.io.Serializable, java.lang.Cloneable

Describes a single table declaration in the from clause of a table expression (SELECT).

Author:

Tobias Downer

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
FromTableDef(TableSelectExpression select)	A simple sub-query table definition (not aliased).
FromTableDef(TableSelectExpression select, java.lang.String table_alias)	A table that is a sub-query and given an aliased name.
FromTableDef(java.lang.String table_name)	A simple table definition (not aliased).
FromTableDef(java.lang.String table_name, java.lang.String table_alias)	Constructs the table def.

Method Summary

Modifier and Type	Method	Description
java.lang.Object	clone()	Clones the object (deep clone of immutable members).
java.lang.String	getAlias()	Returns the alias for this table (or null if no alias given).
java.lang.String	getName()	Returns the name of the table.
TableSelectExpression	getTableSelectExpression()	Returns the TableSelectExpression if this is a subquery table.
java.lang.String	getUniqueKey()	Returns the unique key.
boolean	isSubQueryTable()	Returns true if this item in the FROM clause is a subquery table.
void	prepareExpressions(ExpressionPreparer preparer)	Prepares the expressions in this table def.
void	setUniqueKey(java.lang.String unique_key)	Sets the unique key.

Methods inherited from class java.lang.Object

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

Constructor Detail

FromTableDef

public FromTableDef(java.lang.String table_name,
                    java.lang.String table_alias)

Constructs the table def. The constructs a table that is aliased under a different name.

FromTableDef

public FromTableDef(java.lang.String table_name)

A simple table definition (not aliased).

FromTableDef

public FromTableDef(TableSelectExpression select,
                    java.lang.String table_alias)

A table that is a sub-query and given an aliased name.

FromTableDef

public FromTableDef(TableSelectExpression select)

A simple sub-query table definition (not aliased).

Method Detail

setUniqueKey

public void setUniqueKey(java.lang.String unique_key)

Sets the unique key.

getName

public java.lang.String getName()

Returns the name of the table.

getAlias

public java.lang.String getAlias()

Returns the alias for this table (or null if no alias given).

getUniqueKey

public java.lang.String getUniqueKey()

Returns the unique key.

isSubQueryTable

public boolean isSubQueryTable()

Returns true if this item in the FROM clause is a subquery table.

getTableSelectExpression

public TableSelectExpression getTableSelectExpression()

Returns the TableSelectExpression if this is a subquery table.

prepareExpressions

public void prepareExpressions(ExpressionPreparer preparer)
                        throws DatabaseException

Prepares the expressions in this table def.

Throws:

DatabaseException

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

Clones the object (deep clone of immutable members).

Overrides:

clone in class java.lang.Object

Throws:

java.lang.CloneNotSupportedException