Java Doc for ConstraintConstantAction.java in  » Database-DBMS » db-derby-10.2 » org » apache » derby » impl » sql » execute » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derby.impl.sql.execute 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.apache.derby.impl.sql.execute.GenericConstantAction
      org.apache.derby.impl.sql.execute.DDLConstantAction
         org.apache.derby.impl.sql.execute.DDLSingleTableConstantAction
            org.apache.derby.impl.sql.execute.ConstraintConstantAction

All known Subclasses:   org.apache.derby.impl.sql.execute.DropConstraintConstantAction,  org.apache.derby.impl.sql.execute.CreateConstraintConstantAction,
ConstraintConstantAction
abstract public class ConstraintConstantAction extends DDLSingleTableConstantAction (Code)
This class describes actions that are ALWAYS performed for a constraint creation at Execution time.
version:
   0.1
author:
   Jerry Brenner


Field Summary
protected  StringconstraintName
    
protected  intconstraintType
    
protected  IndexConstantActionindexAction
    
protected  UUIDschemaId
    
protected  StringschemaName
    
protected  StringtableName
    

Constructor Summary
 ConstraintConstantAction(String constraintName, int constraintType, String tableName, UUID tableId, String schemaName, IndexConstantAction indexAction)
     Make one of these puppies.

Method Summary
public  StringgetConstraintName()
    
public  intgetConstraintType()
     Get the constraint type.
public  IndexConstantActiongetIndexAction()
     Get the associated index constant action.
static  booleanvalidateConstraint(String constraintName, String constraintText, TableDescriptor td, LanguageConnectionContext lcc, boolean isCheckConstraint)
     Evaluate a check constraint or not null column constraint.
static  voidvalidateFKConstraint(TransactionController tc, DataDictionary dd, ForeignKeyConstraintDescriptor fk, ReferencedKeyConstraintDescriptor refcd, ExecRow indexTemplateRow)
     Make sure that the foreign key constraint is valid with the existing data in the target table.

Field Detail
constraintName
protected String constraintName(Code)



constraintType
protected int constraintType(Code)



indexAction
protected IndexConstantAction indexAction(Code)



schemaId
protected UUID schemaId(Code)



schemaName
protected String schemaName(Code)



tableName
protected String tableName(Code)




Constructor Detail
ConstraintConstantAction
ConstraintConstantAction(String constraintName, int constraintType, String tableName, UUID tableId, String schemaName, IndexConstantAction indexAction)(Code)
Make one of these puppies.
Parameters:
  constraintName - Constraint name.
Parameters:
  constraintType - Constraint type.
Parameters:
  tableName - Table name.
Parameters:
  tableId - UUID of table.
Parameters:
  schemaName - schema that table and constraint lives in.
Parameters:
  indexAction - IndexConstantAction for constraint (if necessary)RESOLVE - the next parameter should go away once we use UUIDs(Generated constraint names will be based off of uuids)




Method Detail
getConstraintName
public String getConstraintName()(Code)
Get the constraint name the constraint name



getConstraintType
public int getConstraintType()(Code)
Get the constraint type. The constraint type



getIndexAction
public IndexConstantAction getIndexAction()(Code)
Get the associated index constant action. the constant action for the backing index



validateConstraint
static boolean validateConstraint(String constraintName, String constraintText, TableDescriptor td, LanguageConnectionContext lcc, boolean isCheckConstraint) throws StandardException(Code)
Evaluate a check constraint or not null column constraint. Generate a query of the form SELECT COUNT(*) FROM t where NOT() and run it by compiling and executing it. Will work ok if the table is empty and query returns null.
Parameters:
  constraintName - constraint name
Parameters:
  constraintText - constraint text
Parameters:
  td - referenced table
Parameters:
  lcc - the language connection context
Parameters:
  isCheckConstraint - the constraint is a check constraint true if null constraint passes, false otherwise
exception:
  StandardException - if check constraint fails



validateFKConstraint
static void validateFKConstraint(TransactionController tc, DataDictionary dd, ForeignKeyConstraintDescriptor fk, ReferencedKeyConstraintDescriptor refcd, ExecRow indexTemplateRow) throws StandardException(Code)
Make sure that the foreign key constraint is valid with the existing data in the target table. Open the table, if there aren't any rows, ok. If there are rows, open a scan on the referenced key with table locking at level 2. Pass in the scans to the BulkRIChecker. If any rows fail, barf.
Parameters:
  tc - transaction controller
Parameters:
  dd - data dictionary
Parameters:
  fk - foreign key constraint
Parameters:
  refcd - referenced key
Parameters:
  indexTemplateRow - index template row
exception:
  StandardException - on error



Fields inherited from org.apache.derby.impl.sql.execute.DDLSingleTableConstantAction
protected UUID tableId(Code)(Java Doc)


Methods inherited from org.apache.derby.impl.sql.execute.DDLConstantAction
protected String constructToString(String statementType, String objectName)(Code)(Java Doc)
static SchemaDescriptor getAndCheckSchemaDescriptor(DataDictionary dd, UUID schemaId, String statementType) throws StandardException(Code)(Java Doc)
static SchemaDescriptor getSchemaDescriptorForCreate(DataDictionary dd, Activation activation, String schemaName) throws StandardException(Code)(Java Doc)
final void lockTableForDDL(TransactionController tc, long heapConglomerateNumber, boolean exclusiveMode) throws StandardException(Code)(Java Doc)
protected void storeConstraintDependenciesOnPrivileges(Activation activation, Dependent dependent, UUID refTableUUID) throws StandardException(Code)(Java Doc)
protected void storeViewTriggerDependenciesOnPrivileges(Activation activation, Dependent dependent) throws StandardException(Code)(Java Doc)

Methods inherited from org.apache.derby.impl.sql.execute.GenericConstantAction
final public void readExternal(java.io.ObjectInput in)(Code)(Java Doc)
final public void writeExternal(java.io.ObjectOutput out)(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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