Quadcap Embeddable Database

com.quadcap.sql.NotNullConstraint Class Reference

Inheritance diagram for com.quadcap.sql.NotNullConstraint:

List of all members.

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Detailed Description

Constraint implementation of NOT NULL.

Author:

Stan Bailes

Definition at line 60 of file NotNullConstraint.java.

Public Member Functions
	NotNullConstraint ()
	NotNullConstraint (String name)
	NotNullConstraint (String name, Vector names)
void	add (Session session)
	Called when the constraint is added.
void	checkInsert (Session session, Row row) throws SQLException, IOException
	---INSERT Called before a row is INSERTED, with an opportunity to signal a constraint violation if one can be detected.
void	applyInsert (Session session, Row row, long rowId, Constraint activeIndex) throws SQLException, IOException
	Called after the specified row has been inserted, with the resulting row ID, and with the active index.
void	checkUpdate (Session session, byte[] oldKey, Row row, Row oldRow, long rowId, Constraint activeIndex) throws SQLException, IOException
	----UPDATE Called before a row is UPDATED, with an opportunity to signal a constraint violation if one can be detected.
void	applyUpdate (Session session, byte[] oldKey, Row row, Row oldRow, long rowId, Constraint activeIndex) throws SQLException, IOException
	Called after a row has been updated, with the old row, old key, new row and row ID.
void	checkDelete (Session session, Row row, long rowId) throws SQLException, IOException
	----DELETE Called before a row is DELETED, with an opportunity to signal a constraint violation if one can be detected.
void	applyDelete (Session session, Row row, long rowId, Constraint activeIndex) throws SQLException, IOException
	Called after a row has been deleted, with the old row and row ID.
void	delete (Session session)
	Called when the constraint itself is being removed.
void	readExternal (ObjectInput in) throws IOException, ClassNotFoundException
	Read me from a stream.
void	writeExternal (ObjectOutput out) throws IOException
	Write me to a stream.
void	setTable (Table t) throws SQLException
	Set the contstraint's table.

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Constructor & Destructor Documentation

com.quadcap.sql.NotNullConstraint.NotNullConstraint (   )

Definition at line 61 of file NotNullConstraint.java.

com.quadcap.sql.NotNullConstraint.NotNullConstraint (  String  name  )

Definition at line 63 of file NotNullConstraint.java.

com.quadcap.sql.NotNullConstraint.NotNullConstraint (  String  name, Vector  names )

Definition at line 67 of file NotNullConstraint.java.

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Member Function Documentation

void com.quadcap.sql.NotNullConstraint.add (  Session  session  )  [virtual]

Called when the constraint is added. Constraints which maintain state (e.g., indexes) can build their initial data structures (or whatever it is that they do at this time) Implements com.quadcap.sql.Constraint. Definition at line 71 of file NotNullConstraint.java. References com.quadcap.sql.NotNullConstraint.add(). Referenced by com.quadcap.sql.NotNullConstraint.add().

void com.quadcap.sql.NotNullConstraint.applyDelete (  Session  session, Row  row, long  rowId, Constraint  activeIndex )  throws SQLException, IOException [virtual]

Called after a row has been deleted, with the old row and row ID. Constraints which maintain state (such as an index) would extend this class and implement this method to update the index. Implements com.quadcap.sql.Constraint. Definition at line 114 of file NotNullConstraint.java. References com.quadcap.sql.NotNullConstraint.applyDelete(). Referenced by com.quadcap.sql.NotNullConstraint.applyDelete().

void com.quadcap.sql.NotNullConstraint.applyInsert (  Session  session, Row  row, long  rowId, Constraint  activeIndex )  throws SQLException, IOException [virtual]

Called after the specified row has been inserted, with the resulting row ID, and with the active index. Constraints which maintain state (such as an index) would extend this class and implement this method to update the index Implements com.quadcap.sql.Constraint. Definition at line 90 of file NotNullConstraint.java. References com.quadcap.sql.NotNullConstraint.applyInsert(). Referenced by com.quadcap.sql.NotNullConstraint.applyInsert().

void com.quadcap.sql.NotNullConstraint.applyUpdate (  Session  session, byte[]  oldKey, Row  row, Row  oldRow, long  rowId, Constraint  activeIndex )  throws SQLException, IOException [virtual]

Called after a row has been updated, with the old row, old key, new row and row ID. Constraints which maintain state (such as an index) would extend this class and implement this method to update the index. Implements com.quadcap.sql.Constraint. Definition at line 103 of file NotNullConstraint.java. References com.quadcap.sql.NotNullConstraint.applyUpdate(). Referenced by com.quadcap.sql.NotNullConstraint.applyUpdate().

void com.quadcap.sql.NotNullConstraint.checkDelete (  Session  session, Row  row, long  rowId )  throws SQLException, IOException [virtual]

----DELETE Called before a row is DELETED, with an opportunity to signal a constraint violation if one can be detected. Implements com.quadcap.sql.Constraint. Definition at line 109 of file NotNullConstraint.java. References com.quadcap.sql.NotNullConstraint.checkDelete(). Referenced by com.quadcap.sql.NotNullConstraint.checkDelete().

void com.quadcap.sql.NotNullConstraint.checkInsert (  Session  session, Row  row )  throws SQLException, IOException [virtual]

---INSERT Called before a row is INSERTED, with an opportunity to signal a constraint violation if one can be detected. Implements com.quadcap.sql.Constraint. Definition at line 74 of file NotNullConstraint.java. References com.quadcap.sql.NotNullConstraint.checkInsert(), com.quadcap.sql.TupleImpl.getColumn(), com.quadcap.sql.Constraint.getColumns(), com.quadcap.sql.TupleImpl.getName(), and com.quadcap.sql.Column.getShortName(). Referenced by com.quadcap.sql.NotNullConstraint.checkInsert().

void com.quadcap.sql.NotNullConstraint.checkUpdate (  Session  session, byte[]  oldKey, Row  row, Row  oldRow, long  rowId, Constraint  activeIndex )  throws SQLException, IOException [virtual]

----UPDATE Called before a row is UPDATED, with an opportunity to signal a constraint violation if one can be detected. Because the oldRow may be 'lazy', it's important to instantiate whatever items are going to be needed later by applyUpdate *now*, otherwise, apply may get the 'new' versions of those items, because the underlying byte stream is modified by the time applyUpdate gets called. Implements com.quadcap.sql.Constraint. Definition at line 96 of file NotNullConstraint.java. References com.quadcap.sql.NotNullConstraint.checkUpdate(). Referenced by com.quadcap.sql.NotNullConstraint.checkUpdate().

void com.quadcap.sql.NotNullConstraint.delete (  Session  session  )  [virtual]

Called when the constraint itself is being removed. Constraints which allocate resources of any kind should release them here since they are about to be discarded and gc'ed. Implements com.quadcap.sql.Constraint. Definition at line 120 of file NotNullConstraint.java.

void com.quadcap.sql.NotNullConstraint.readExternal (  ObjectInput  in  )  throws IOException, ClassNotFoundException

Read me from a stream. Reimplemented from com.quadcap.sql.Constraint. Definition at line 122 of file NotNullConstraint.java. References com.quadcap.sql.NotNullConstraint.readExternal(). Referenced by com.quadcap.sql.NotNullConstraint.readExternal().

void com.quadcap.sql.NotNullConstraint.setTable (  Table  t  )  throws SQLException

Set the contstraint's table. Reimplemented from com.quadcap.sql.Constraint. Definition at line 132 of file NotNullConstraint.java. References com.quadcap.sql.Constraint.getColumns(), and com.quadcap.sql.NotNullConstraint.setTable(). Referenced by com.quadcap.sql.NotNullConstraint.setTable().

void com.quadcap.sql.NotNullConstraint.writeExternal (  ObjectOutput  out  )  throws IOException

Write me to a stream. Reimplemented from com.quadcap.sql.Constraint. Definition at line 128 of file NotNullConstraint.java. References com.quadcap.sql.NotNullConstraint.writeExternal(). Referenced by com.quadcap.sql.NotNullConstraint.writeExternal().