Examples of org.hsqldb.lib.OrderedHashSet

org.hsqldb.lib.OrderedHashSet
Implementation of an ordered Set which maintains the inserted order of elements and allows access by index. Iterators return the elements in the index order. This class does not store null elements. @author Fred Toussi (fredt@users dot sourceforge.net) @version 1.9.0 @since 1.9.0

     * After addition or removal of columns and indexes all views that
     * reference the table should be recompiled.
     */
    public void recompileDependentObjects(Table table) {


        OrderedHashSet set = new OrderedHashSet();


        getCascadingReferencingObjectNames(table.getName(), set);


        Session session = database.sessionManager.getSysSession();


        for (int i = 0; i < set.size(); i++) {
            HsqlName name = (HsqlName) set.get(i);


            switch (name.type) {


                case SchemaObject.VIEW :
                case SchemaObject.CONSTRAINT :

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    }


    // references
    private void addReferences(SchemaObject object) {


        OrderedHashSet set = object.getReferences();


        if (set == null) {
            return;
        }


        for (int i = 0; i < set.size(); i++) {
            HsqlName referenced = (HsqlName) set.get(i);
            HsqlName name       = object.getName();


            if (object instanceof Routine) {
                name = ((Routine) object).getSpecificName();
            }

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        referenceMap.remove(referenced);
    }


    private void removeReferencingObject(SchemaObject object) {


        OrderedHashSet set = object.getReferences();


        if (set == null) {
            return;
        }


        for (int i = 0; i < set.size(); i++) {
            HsqlName referenced = (HsqlName) set.get(i);
            HsqlName name       = object.getName();


            if (object instanceof Routine) {
                name = ((Routine) object).getSpecificName();
            }

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        }
    }


    OrderedHashSet getReferencingObjectNames(HsqlName object) {


        OrderedHashSet set = new OrderedHashSet();
        Iterator       it  = referenceMap.get(object);


        while (it.hasNext()) {
            HsqlName name = (HsqlName) it.next();


            set.add(name);
        }


        return set;
    }

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    }


    public OrderedHashSet getReferencingObjectNames(HsqlName table,
            HsqlName column) {


        OrderedHashSet set = new OrderedHashSet();
        Iterator       it  = referenceMap.get(table);


        while (it.hasNext()) {
            HsqlName       name       = (HsqlName) it.next();
            SchemaObject   object     = getSchemaObject(name);
            OrderedHashSet references = object.getReferences();


            if (references.contains(column)) {
                set.add(name);
            }
        }


        return set;

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    //
    public void getCascadingReferencingObjectNames(HsqlName object,
            OrderedHashSet set) {


        OrderedHashSet newSet = new OrderedHashSet();
        Iterator       it     = referenceMap.get(object);


        while (it.hasNext()) {
            HsqlName name  = (HsqlName) it.next();
            boolean  added = set.add(name);


            if (added) {
                newSet.add(name);
            }
        }


        for (int i = 0; i < newSet.size(); i++) {
            HsqlName name = (HsqlName) newSet.get(i);


            getCascadingReferencingObjectNames(name, set);
        }
    }

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        return null;
    }


    public void checkColumnIsReferenced(HsqlName tableName, HsqlName name) {


        OrderedHashSet set = getReferencingObjectNames(tableName, name);


        if (!set.isEmpty()) {
            HsqlName objectName = (HsqlName) set.get(0);


            throw Error.error(ErrorCode.X_42502,
                              objectName.getSchemaQualifiedStatementName());
        }
    }

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        }
    }


    public void checkObjectIsReferenced(HsqlName name) {


        OrderedHashSet set     = getReferencingObjectNames(name);
        HsqlName       refName = null;


        for (int i = 0; i < set.size(); i++) {
            refName = (HsqlName) set.get(i);


            // except columns of same table
            if (refName.parent != name) {
                break;
            }

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                addReferences(object);


                return;
            }
            case SchemaObject.TABLE : {
                OrderedHashSet refs = object.getReferences();


                for (int i = 0; i < refs.size(); i++) {
                    HsqlName ref = (HsqlName) refs.get(i);


                    if (ref.type == SchemaObject.COLUMN) {
                        int index = ((Table) object).findColumn(ref.name);
                        ColumnSchema column =
                            ((Table) object).getColumn(index);

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        addReferences(object);
    }


    public void removeSchemaObject(HsqlName name, boolean cascade) {


        OrderedHashSet objectSet = new OrderedHashSet();


        switch (name.type) {


            case SchemaObject.ROUTINE :
            case SchemaObject.PROCEDURE :
            case SchemaObject.FUNCTION : {
                RoutineSchema routine = (RoutineSchema) getSchemaObject(name);


                if (routine != null) {
                    Routine[] specifics = routine.getSpecificRoutines();


                    for (int i = 0; i < specifics.length; i++) {
                        getCascadingReferencingObjectNames(
                            specifics[i].getSpecificName(), objectSet);
                    }
                }
            }
            break;


            case SchemaObject.SEQUENCE :
            case SchemaObject.TABLE :
            case SchemaObject.VIEW :
            case SchemaObject.TYPE :
            case SchemaObject.CHARSET :
            case SchemaObject.COLLATION :
            case SchemaObject.SPECIFIC_ROUTINE :
                getCascadingReferencingObjectNames(name, objectSet);
                break;


            case SchemaObject.DOMAIN :
                OrderedHashSet set = getReferencingObjectNames(name);
                Iterator       it  = set.iterator();


                while (it.hasNext()) {
                    HsqlName ref = (HsqlName) it.next();


                    if (ref.type == SchemaObject.COLUMN) {
                        it.remove();
                    }
                }


                if (!set.isEmpty()) {
                    HsqlName objectName = (HsqlName) set.get(0);


                    throw Error.error(
                        ErrorCode.X_42502,
                        objectName.getSchemaQualifiedStatementName());
                }

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Related Classes of org.hsqldb.lib.OrderedHashSet

org.hsqldb.Collation

org.hsqldb.ColumnSchema

org.hsqldb.Constraint

org.hsqldb.Database$TimeoutRunner

org.hsqldb.dbinfo.DatabaseInformationFull

org.hsqldb.dbinfo.DatabaseInformationMain

org.hsqldb.Expression

org.hsqldb.ExpressionColumn

org.hsqldb.ExpressionLogical

org.hsqldb.index.IndexAVL

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