Examples of org.apache.derby.iapi.sql.dictionary.ConstraintDescriptorList.elementAt()

Package org.apache.derby.iapi.sql.dictionary

Class org.apache.derby.iapi.sql.dictionary.ConstraintDescriptorList

Examples of org.apache.derby.iapi.sql.dictionary.ConstraintDescriptorList.elementAt()

org.apache.derby.iapi.sql.dictionary.ConstraintDescriptorList.elementAt()
Return the nth (0-based) element in the list. @param n Which element to return. @return The nth element in the list.

    //truncate table is not allowed if there are any tables referencing it.
    //except if it is self referencing.
    ConstraintDescriptorList cdl = dd.getConstraintDescriptors(td);
    for(int index = 0; index < cdl.size(); index++)
    {
      ConstraintDescriptor cd = cdl.elementAt(index);
      if (cd instanceof ReferencedKeyConstraintDescriptor)
      {
        ReferencedKeyConstraintDescriptor rfcd = (ReferencedKeyConstraintDescriptor) cd;
        if(rfcd.hasNonSelfReferencingFK(ConstraintDescriptor.ENABLED))
        {

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    ValueNode          checkTree = null;


    // Get the text of all the check constraints
    for (int index = 0; index < ccCDLSize; index++)
    {
      ConstraintDescriptor cd = ccCDL.elementAt(index);


      String constraintText = cd.getConstraintText();


      // Get the query tree for this constraint
      ValueNode oneConstraint =

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    Vector                              refColDescriptors = new Vector(1);
    Vector                              fkColMap = new Vector(1);
    int activeSize = activeList.size();
    for (int index = 0; index < activeSize; index++)
    {
      ConstraintDescriptor cd = activeList.elementAt(index);


      if (cd instanceof ForeignKeyConstraintDescriptor)
      {
        /*
        ** We are saving information for checking the

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          ( ((ReferencedKeyConstraintDescriptor)cd).getForeignKeyConstraints(ConstraintDescriptor.ENABLED) );
  
        int fklSize = fkcdl.size();
        for (int inner = 0; inner < fklSize; inner++)
        {
          ConstraintDescriptor fkcd = fkcdl.elementAt(inner);
          if (dependent == null) 
          { 
            compilerContext.createDependency(fkcd); 
            compilerContext.createDependency(fkcd.getTableDescriptor()); 
          }

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      if (cdl != null) //table does have some pre-existing constraints defined on it
      {
        for (int i=0; i<cdl.size();i++)
        {
          cd = cdl.elementAt(i);
          //if the constraint type is not primary key or unique key, ignore it.
          if (cd.getConstraintType() == DataDictionary.PRIMARYKEY_CONSTRAINT ||
          cd.getConstraintType() == DataDictionary.UNIQUE_CONSTRAINT)
            constraintsVector.addElement(cd);
        }

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      if (cdl != null) //table does have some pre-existing constraints defined on it
      {
        for (int i=0; i<cdl.size();i++)
        {
          cd = cdl.elementAt(i);
          //if the constraint type is not primary key or unique key, ignore it.
          if (cd.getConstraintType() == DataDictionary.PRIMARYKEY_CONSTRAINT ||
          cd.getConstraintType() == DataDictionary.UNIQUE_CONSTRAINT)
                    {
                        constraintsVector.add(cd);

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      cdl = cd.getForeignKeyConstraints(ReferencedKeyConstraintDescriptor.ALL);
      int cdlSize = cdl.size();


      for(int index = 0; index < cdlSize; index++)
      {
        fkcd = (ForeignKeyConstraintDescriptor) cdl.elementAt(index);
        dm.invalidateFor(fkcd, DependencyManager.DROP_CONSTRAINT, lcc);
        dropConstraint(fkcd, activation, lcc, true);
      }
  
      /*

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    intArray[0]                          = columnPosition;


    for (int index = 0; index < cdl.size(); index++)
    {
      ConstraintDescriptor existingConstraint =
                                        cdl.elementAt(index);


      if (!(existingConstraint instanceof KeyConstraintDescriptor))
        continue;


      if (!existingConstraint.columnIntersects(intArray))

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        if (refcdl.size() > 0)
        {
          throw StandardException.newException(
             SQLState.LANG_MODIFY_COLUMN_REFERENCED, 
                         name, refcdl.elementAt(0).getConstraintName());
        }
        
        // Make the statement dependent on the primary key constraint.
        getCompilerContext().createDependency(existingConstraint);
      }

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    ConstraintDescriptor constraintDescriptor;


    // go through all the constraints defined on the table
    for (int index = 0; index < size; index++)
    {
      constraintDescriptor = constraintDescriptorList.elementAt(index);
      // if it is a check constraint, error
      if (constraintDescriptor.getConstraintType() == DataDictionary.CHECK_CONSTRAINT)
      {
        throw StandardException.newException(
            SQLState.LANG_PROVIDER_HAS_DEPENDENT_OBJECT,

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