Package org.h2.schema

Class TriggerObject

  • All Implemented Interfaces:
    HasSQL
    public final class TriggerObject
extends SchemaObject
    A trigger is created using the statement CREATE TRIGGER

    • Field Detail

      • DEFAULT_QUEUE_SIZE

        public static final int DEFAULT_QUEUE_SIZE
        The default queue size.
        See Also:
        Constant Field Values

      • insteadOf

        private boolean insteadOf

      • before

        private boolean before

      • typeMask

        private int typeMask

      • rowBased

        private boolean rowBased

      • onRollback

        private boolean onRollback

      • queueSize

        private int queueSize

      • noWait

        private boolean noWait

      • table

        private Table table

      • triggerClassName

        private java.lang.String triggerClassName

      • triggerSource

        private java.lang.String triggerSource

      • triggerCallback

        private Trigger triggerCallback

    • Constructor Detail

      • TriggerObject

        public TriggerObject​(Schema schema,
                     int id,
                     java.lang.String name,
                     Table table)

    • Method Detail

      • setBefore

        public void setBefore​(boolean before)

      • isInsteadOf

        public boolean isInsteadOf()

      • setInsteadOf

        public void setInsteadOf​(boolean insteadOf)

      • load

        private void load()

      • loadFromSource

        private Trigger loadFromSource()

      • setTriggerClassName

        public void setTriggerClassName​(java.lang.String triggerClassName,
                                boolean force)
        Set the trigger class name and load the class if possible.
        Parameters:
        triggerClassName - the name of the trigger class
        force - whether exceptions (due to missing class or access rights) should be ignored

      • setTriggerSource

        public void setTriggerSource​(java.lang.String source,
                             boolean force)
        Set the trigger source code and compile it if possible.
        Parameters:
        source - the source code of a method returning a Trigger
        force - whether exceptions (due to syntax error) should be ignored

      • setTriggerAction

        private void setTriggerAction​(java.lang.String triggerClassName,
                              java.lang.String source,
                              boolean force)

      • fire

        public void fire​(SessionLocal session,
                 int type,
                 boolean beforeAction)
        Call the trigger class if required. This method does nothing if the trigger is not defined for the given action. This method is called before or after any rows have been processed, once for each statement.
        Parameters:
        session - the session
        type - the trigger type
        beforeAction - if this method is called before applying the changes

      • convertToObjectList

        private static java.lang.Object[] convertToObjectList​(Row row,
                                                      JdbcConnection conn)

      • fireRow

        public boolean fireRow​(SessionLocal session,
                       Table table,
                       Row oldRow,
                       Row newRow,
                       boolean beforeAction,
                       boolean rollback)
        Call the fire method of the user-defined trigger class if required. This method does nothing if the trigger is not defined for the given action. This method is called before or after a row is processed, possibly many times for each statement.
        Parameters:
        session - the session
        table - the table
        oldRow - the old row
        newRow - the new row
        beforeAction - true if this method is called before the operation is applied
        rollback - when the operation occurred within a rollback
        Returns:
        true if no further action is required (for 'instead of' triggers)

      • createResultSet

        private static JdbcResultSet createResultSet​(JdbcConnection conn,
                                             Table table,
                                             Row row,
                                             boolean updatable)
                                      throws java.sql.SQLException
        Throws:
        java.sql.SQLException

      • getErrorExecutingTrigger

        private DbException getErrorExecutingTrigger​(java.lang.Throwable e)

      • getTypeMask

        public int getTypeMask()
        Returns the trigger type.
        Returns:
        the trigger type

      • setTypeMask

        public void setTypeMask​(int typeMask)
        Set the trigger type.
        Parameters:
        typeMask - the type

      • setRowBased

        public void setRowBased​(boolean rowBased)

      • isRowBased

        public boolean isRowBased()

      • setQueueSize

        public void setQueueSize​(int size)

      • getQueueSize

        public int getQueueSize()

      • setNoWait

        public void setNoWait​(boolean noWait)

      • isNoWait

        public boolean isNoWait()

      • setOnRollback

        public void setOnRollback​(boolean onRollback)

      • isOnRollback

        public boolean isOnRollback()

      • getCreateSQLForCopy

        public java.lang.String getCreateSQLForCopy​(Table targetTable,
                                            java.lang.String quotedName)
        Description copied from class: DbObject
        Build a SQL statement to re-create the object, or to create a copy of the object with a different name or referencing a different table
        Specified by:
        getCreateSQLForCopy in class DbObject
        Parameters:
        targetTable - the new table
        quotedName - the quoted name
        Returns:
        the SQL statement

      • getTypeNameList

        public java.lang.StringBuilder getTypeNameList​(java.lang.StringBuilder builder)
        Append the trigger types to the given string builder.
        Parameters:
        builder - the builder
        Returns:
        the passed string builder

      • getCreateSQL

        public java.lang.String getCreateSQL()
        Description copied from class: DbObject
        Construct the CREATE ... SQL statement for this object.
        Specified by:
        getCreateSQL in class DbObject
        Returns:
        the SQL statement

      • getType

        public int getType()
        Description copied from class: DbObject
        Get the object type.
        Specified by:
        getType in class DbObject
        Returns:
        the object type

      • removeChildrenAndResources

        public void removeChildrenAndResources​(SessionLocal session)
        Description copied from class: DbObject
        Delete all dependent children objects and resources of this object.
        Specified by:
        removeChildrenAndResources in class DbObject
        Parameters:
        session - the session

      • getTable

        public Table getTable()
        Get the table of this trigger.
        Returns:
        the table

      • isBefore

        public boolean isBefore()
        Check if this is a before trigger.
        Returns:
        true if it is

      • getTriggerClassName

        public java.lang.String getTriggerClassName()
        Get the trigger class name.
        Returns:
        the class name

      • getTriggerSource

        public java.lang.String getTriggerSource()

      • close

        public void close()
           throws java.sql.SQLException
        Close the trigger.
        Throws:
        java.sql.SQLException - on failure

      • isSelectTrigger

        public boolean isSelectTrigger()
        Check whether this is a select trigger.
        Returns:
        true if it is