Package org.hsqldb.index

Examples of org.hsqldb.index.Index

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    }

    public int elementCount(Session session) {

        if (elementCount < 0) {
            Index index = this.indexList[0];

            if (index == null) {
                elementCount = 0;
            } else {
                elementCount = ((IndexAVL) index).getNodeCount(session, this);
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        // create an autonamed index
        HsqlName indexname = database.nameManager.newAutoName("IDX",
            name.name, table.getSchemaName(), table.getName(),
            SchemaObject.INDEX);
        Index index = table.createIndexStructure(indexname, cols, null, null,
            true, true, false);
        Constraint constraint =
            new Constraint(name, table, index,
                           SchemaObject.ConstraintTypes.UNIQUE);
        Table tn = table.moveDefinition(session, table.tableType, null,
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     *
     * @param indexName String
     */
    void dropIndex(String indexName) {

        Index index;

        checkModifyTable();

        index = table.getIndex(indexName);

        if (table.isIndexingMutable()) {
            table.dropIndex(index.getPosition());
        } else {
            OrderedHashSet indexSet = new OrderedHashSet();

            indexSet.add(table.getIndex(indexName).getName());

            Table tn = table.moveDefinition(session, table.tableType, null,
                                            null, null, -1, 0, emptySet,
                                            indexSet);

            moveData(table, tn, -1, 0);
            updateConstraints(tn, emptySet);
            setNewTableInSchema(tn);

            table = tn;
        }

        if (!index.isConstraint()) {
            database.schemaManager.removeSchemaObject(index.getName());
        }

        database.schemaManager.recompileDependentObjects(table);
    }
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    private Boolean getAllAnyValue(Session session, Object[] data,
                                   SubQuery subquery) {

        Table           table = subquery.getTable();
        boolean         empty = table.isEmpty(session);
        Index           index = table.getFullIndex();
        RowIterator     it;
        Row             firstrow;
        PersistentStore store   = session.sessionData.getRowStore(table);
        Row             lastrow = index.lastRow(session, store).getNextRow();
        Object[]        lastdata;
        Object[]        firstdata;

        switch (exprSubType) {

            case OpTypes.ANY_QUANTIFIED : {
                if (empty) {
                    return Boolean.FALSE;
                }

                if (countNulls(data) == data.length) {
                    return null;
                }

                lastdata = lastrow.getData();

                if (countNulls(lastdata) == data.length) {
                    return null;
                }

                convertToType(session, data, nodes[LEFT].nodeDataTypes,
                              nodes[RIGHT].nodeDataTypes);

                if (opType == OpTypes.EQUAL) {
                    it = index.findFirstRow(session, store, data);

                    return it.hasNext() ? Boolean.TRUE
                                        : Boolean.FALSE;
                }

                it        = index.findFirstRowNotNull(session, store);
                firstrow  = it.getNextRow();
                firstdata = firstrow.getData();

                Boolean comparefirst = compareValues(session, data, firstdata);
                Boolean comparelast  = compareValues(session, data, lastdata);

                switch (opType) {

                    case OpTypes.NOT_EQUAL :
                        return Boolean.TRUE.equals(comparefirst)
                               || Boolean.TRUE.equals(
                                   comparelast) ? Boolean.TRUE
                                                : Boolean.FALSE;

                    case OpTypes.GREATER :
                        return comparefirst;

                    case OpTypes.GREATER_EQUAL :
                        return comparefirst;

                    case OpTypes.SMALLER :
                        return comparelast;

                    case OpTypes.SMALLER_EQUAL :
                        return comparelast;
                }

                break;
            }
            case OpTypes.ALL_QUANTIFIED : {
                if (empty) {
                    return Boolean.TRUE;
                }

                if (countNulls(data) == data.length) {
                    return null;
                }

                it        = index.firstRow(session, store);
                firstrow  = it.getNextRow();
                firstdata = firstrow.getData();

                if (countNulls(firstdata) == data.length) {
                    return null;
                }

                convertToType(session, data, nodes[LEFT].nodeDataTypes,
                              nodes[RIGHT].nodeDataTypes);

                it = index.findFirstRow(session, store, data);

                if (opType == OpTypes.EQUAL) {
                    if (it.hasNext()) {
                        return subquery.getTable().getRowCount(store) == 1
                               ? Boolean.TRUE
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        ArrayUtil.fillArray(accessorList, null);
    }

    public void setAccessor(Index key, CachedObject accessor) {

        Index index = (Index) key;

        accessorList[index.getPosition()] = accessor;
    }
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    public void setAccessor(Index key, int accessor) {}

    public int elementCount(Session session) {

        Index index = this.indexList[0];

        if (elementCount < 0) {
            if (index == null) {
                elementCount = 0;
            } else {
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        }

        tn.createPrimaryKey(getIndex(0).getName(), pkCols, false);

        for (int i = 1; i < indexList.length; i++) {
            Index idx = indexList[i];

            if (dropIndexes.contains(idx.getName())) {
                continue;
            }

            int[] colarr = ArrayUtil.toAdjustedColumnArray(idx.getColumns(),
                colIndex, adjust);

            idx = tn.createIndexStructure(idx.getName(), colarr,
                                          idx.getColumnDesc(), null,
                                          idx.isUnique(), idx.isConstraint(),
                                          idx.isForward());

            tn.addIndex(session, idx);
        }

        if (index != null) {
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    OrderedHashSet getContainingIndexNames(int colIndex) {

        OrderedHashSet set = new OrderedHashSet();

        for (int i = 0, size = indexList.length; i < size; i++) {
            Index index = indexList[i];

            if (ArrayUtil.find(index.getColumns(), colIndex) != -1) {
                set.add(index.getName());
            }
        }

        return set;
    }
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//            case TableBase.MEMORY_TABLE :
            case TableBase.SYSTEM_SUBQUERY :
            case TableBase.SYSTEM_TABLE :
            case TableBase.VIEW_TABLE :
            case TableBase.TEMP_TABLE : {
                Index index = createIndexForColumns(session, new int[]{ col });

                return index;
            }
        }
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    /**
     *  Used to create an index automatically for system and temp tables.
     */
    Index createIndexForColumns(Session session, int[] columns) {

        Index index = null;
        HsqlName indexName = database.nameManager.newAutoName("IDX_T",
            getSchemaName(), getName(), SchemaObject.INDEX);

        try {
            index = createAndAddIndexStructure(session, indexName, columns,
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Related Classes of org.hsqldb.index.Index

  • org.hsqldb.Constraint
  • org.hsqldb.dbinfo.DatabaseInformationMain
  • org.hsqldb.ExpressionLogical
  • org.hsqldb.ParserDDL
  • org.hsqldb.persist.RowStoreAVL
  • org.hsqldb.persist.RowStoreAVLDisk
  • org.hsqldb.persist.RowStoreAVLHybrid
  • org.hsqldb.persist.RowStoreAVLMemory
  • org.hsqldb.QuerySpecification
  • org.hsqldb.RangeVariable
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