Java Doc for Constraint.java in  » Database-DBMS » h2database » org » h2 » constraint » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » h2database » org.h2.constraint   Source Cross Reference   Class Diagram   Java Document (Java Doc)   org.h2.schema.SchemaObjectBase    org.h2.constraint.Constraint All known Subclasses:   org.h2.constraint.ConstraintUnique,  org.h2.constraint.ConstraintCheck,  org.h2.constraint.ConstraintReferential, Constraint abstract public class Constraint extends SchemaObjectBase implements Comparable(Code) The base class for constraint checking. Field Summary final public static  String CHECK      The constraint type name for check constraints. final public static  String PRIMARY_KEY      The constraint type name for primary key constraints. final public static  String REFERENTIAL      The constraint type name for referential constraints. final public static  String UNIQUE      The constraint type name for unique constraints. protected  Table table      The table for which this constraint is defined. Constructor Summary public   Constraint(Schema schema, int id, String name, Table table)      Method Summary abstract public  void checkExistingData(Session session)      Check the existing data. public  void checkRename()      abstract public  void checkRow(Session session, Table t, Row oldRow, Row newRow)      Check if this row fulfils the constraint. public  int compareTo(Object other)      abstract public  boolean containsColumn(Column col)      Check if this constraint contains the given column. abstract public  String getConstraintType()      abstract public  String getCreateSQLWithoutIndexes()      Get the SQL statement to create this constraint. public  String getDropSQL()      public  Table getRefTable()      abstract public  String getShortDescription()      Get a short description of the constraint. public  Table getTable()      public  int getType()      abstract public  boolean isBefore()      Check if this constraint needs to be checked before updating the data. abstract public  void setIndexOwner(Index index)      This index is now the owner of the specified index. abstract public  boolean usesIndex(Index index)      Check if this constraint needs the specified index. Field Detail CHECK final public static String CHECK(Code) The constraint type name for check constraints. PRIMARY_KEY final public static String PRIMARY_KEY(Code) The constraint type name for primary key constraints. REFERENTIAL final public static String REFERENTIAL(Code) The constraint type name for referential constraints. UNIQUE final public static String UNIQUE(Code) The constraint type name for unique constraints. table protected Table table(Code) The table for which this constraint is defined. Constructor Detail Constraint public Constraint(Schema schema, int id, String name, Table table)(Code) Method Detail checkExistingData abstract public void checkExistingData(Session session) throws SQLException(Code) Check the existing data. This method is called if the constraint is added after data has been inserted into the table. Parameters:   session - the session checkRename public void checkRename() throws SQLException(Code) checkRow abstract public void checkRow(Session session, Table t, Row oldRow, Row newRow) throws SQLException(Code) Check if this row fulfils the constraint. This method throws an exception if not. Parameters:   session - the session Parameters:   t - the table Parameters:   oldRow - the old row Parameters:   newRow - the new row compareTo public int compareTo(Object other)(Code) containsColumn abstract public boolean containsColumn(Column col)(Code) Check if this constraint contains the given column. Parameters:   col - the column true if it does getConstraintType abstract public String getConstraintType()(Code) The constraint type name the name getCreateSQLWithoutIndexes abstract public String getCreateSQLWithoutIndexes()(Code) Get the SQL statement to create this constraint. the SQL statement getDropSQL public String getDropSQL()(Code) getRefTable public Table getRefTable()(Code) getShortDescription abstract public String getShortDescription()(Code) Get a short description of the constraint. This includes the constraint name (if set), and the constraint expression. the description getTable public Table getTable()(Code) getType public int getType()(Code) isBefore abstract public boolean isBefore()(Code) Check if this constraint needs to be checked before updating the data. true if it must be checked before updating setIndexOwner abstract public void setIndexOwner(Index index)(Code) This index is now the owner of the specified index. Parameters:   index - usesIndex abstract public boolean usesIndex(Index index)(Code) Check if this constraint needs the specified index. Parameters:   index - the index true if the index is used Methods inherited from org.h2.schema.SchemaObjectBase public String getSQL()(Code)(Java Doc) public Schema getSchema()(Code)(Java Doc)