com.mckoi.database.interpret

Class ConstraintDef

java.lang.Object

com.mckoi.database.interpret.ConstraintDef

All Implemented Interfaces:

StatementTreeObject, Serializable, Cloneable

public final class ConstraintDef
extends Object
implements Serializable, StatementTreeObject, Cloneable

Represents a constraint definition (description) for a table.

Author:

Tobias Downer

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static int	CHECK A CHECK constraint.
static int	FOREIGN_KEY A FOREIGN_KEY constraint.
static int	PRIMARY_KEY A PRIMARY_KEY constraint.
static int	UNIQUE A UNIQUE constraint.

Constructor Summary

Constructors

Constructor and Description
ConstraintDef()

Method Summary

Modifier and Type	Method and Description
Object	clone() Performs a DEEP clone of this object if it is mutable, or a deep clone of its mutable members.
String[]	getColumnList() Returns the first column list as a string array.
String[]	getColumnList2() Returns the first column list as a string array.
String	getDeleteRule() Returns the delete rule if this is a foreign key reference.
String	getUpdateRule() Returns the update rule if this is a foreign key reference.
void	prepareExpressions(ExpressionPreparer preparer) Prepares all expressions in this statement tree object by passing the ExpressionPreparer object to the 'prepare' method of the expression.
void	setCheck(Expression exp) Sets object up for a check constraint.
void	setForeignKey(String ref_table, ArrayList col_list, ArrayList ref_col_list, String delete_rule, String update_rule) Sets object up for foreign key reference.
void	setInitiallyDeferred() Sets that this constraint is initially deferred.
void	setName(String name) Sets the name of the constraint.
void	setNotDeferrable() Sets that this constraint is not deferrable.
void	setPrimaryKey(ArrayList list) Sets object up for a primary key constraint.
void	setUnique(ArrayList list) Sets object up for a unique constraint.

Methods inherited from class java.lang.Object

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

Field Detail

PRIMARY_KEY

public static final int PRIMARY_KEY

A PRIMARY_KEY constraint. With this constraint, the 'column_list' list contains the names of the columns in this table that are defined as the primary key. There may only be one primary key constraint per table.

See Also:

Constant Field Values

UNIQUE

public static final int UNIQUE

A UNIQUE constraint. With this constraint, the 'column_list' list contains the names of the columns in this table that must be unique.

See Also:

Constant Field Values

FOREIGN_KEY

public static final int FOREIGN_KEY

A FOREIGN_KEY constraint. With this constraint, the 'table_name' string contains the name of the table that this is a foreign key for, the 'column_list' list contains the list of foreign key columns, and 'column_list2' optionally contains the referenced columns.

See Also:

Constant Field Values

CHECK

public static final int CHECK

A CHECK constraint. With this constraint, the 'expression' object contains the expression that must evaluate to true when adding a column to the table.

See Also:

Constant Field Values

Constructor Detail

ConstraintDef

public ConstraintDef()

Method Detail

setName

public void setName(String name)

Sets the name of the constraint.

setPrimaryKey

public void setPrimaryKey(ArrayList list)

Sets object up for a primary key constraint.

setUnique

public void setUnique(ArrayList list)

Sets object up for a unique constraint.

setCheck

public void setCheck(Expression exp)

Sets object up for a check constraint.

setForeignKey

public void setForeignKey(String ref_table,
                          ArrayList col_list,
                          ArrayList ref_col_list,
                          String delete_rule,
                          String update_rule)

Sets object up for foreign key reference.

setInitiallyDeferred

public void setInitiallyDeferred()

Sets that this constraint is initially deferred.

setNotDeferrable

public void setNotDeferrable()

Sets that this constraint is not deferrable.

getColumnList

public String[] getColumnList()

Returns the first column list as a string array.

getColumnList2

public String[] getColumnList2()

Returns the first column list as a string array.

getDeleteRule

public String getDeleteRule()

Returns the delete rule if this is a foreign key reference.

getUpdateRule

public String getUpdateRule()

Returns the update rule if this is a foreign key reference.

prepareExpressions

public void prepareExpressions(ExpressionPreparer preparer)
                        throws DatabaseException

Description copied from interface: StatementTreeObject

Prepares all expressions in this statement tree object by passing the ExpressionPreparer object to the 'prepare' method of the expression.

Specified by:

prepareExpressions in interface StatementTreeObject

Throws:

DatabaseException

clone

public Object clone()
             throws CloneNotSupportedException

Description copied from interface: StatementTreeObject

Performs a DEEP clone of this object if it is mutable, or a deep clone of its mutable members. If the object is immutable then it may return 'this'.

Specified by:

clone in interface StatementTreeObject

Overrides:

clone in class Object

Throws:

CloneNotSupportedException