Examples of org.hsqldb_voltpatches.RowAVLDisk

org.hsqldb_voltpatches.RowAVLDisk
In-memory representation of a disk-based database row object with methods for serialization and de-serialization.
A CachedRow is normally part of a circular double linked list which contains all of the Rows currently in the Cache for the database. It is unlinked from this list when it is freed from the Cache to make way for other rows. New class from the Hypersonic Original @author Thomas Mueller (Hypersonic SQL Group) @version 1.8.0 @since Hypersonic SQL


    public CachedObject get(RowInputInterface in) {


        try {
            if (isCached) {
                return new RowAVLDisk(table, in);
            }
        } catch (HsqlException e) {
            return null;
        } catch (IOException e1) {
            return null;

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    }


    public CachedObject getNewCachedObject(Session session, Object object) {


        if (isCached) {
            Row row = new RowAVLDisk(table, (Object[]) object);


            add(row);


            if (isTempTable) {
                RowAction.addAction(session, RowAction.ACTION_INSERT,
                                    (Table) table, row);
            }


            return row;
        } else {
            memoryRowCount++;


            if (useCache && memoryRowCount > maxMemoryRowCount) {
                changeToDiskTable();


                return getNewCachedObject(session, object);
            }


            Row row = new RowAVL(table, (Object[]) object);
            int id  = rowIdSequence++;


            row.setPos(id);
            rowIdMap.put(id, row);


            if (isTempTable) {
                RowAction.addAction(session, RowAction.ACTION_INSERT,
                                    (Table) table, row);

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    }


    private NodeAVLDisk findNode(PersistentStore store, int pos) {


        NodeAVLDisk ret = null;
        RowAVLDisk  r   = (RowAVLDisk) store.get(pos, false);


        if (r != null) {
            ret = (NodeAVLDisk) r.getNode(iId);
        }


        return ret;
    }

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    }


    NodeAVL getLeft(PersistentStore store) {


        NodeAVLDisk node = this;
        RowAVLDisk  row  = this.row;


        if (!row.isInMemory()) {
            row  = (RowAVLDisk) store.get(this.row, false);
            node = (NodeAVLDisk) row.getNode(iId);
        }


        if (node.iLeft == NO_POS) {
            return null;
        }

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    }


    NodeAVL getRight(PersistentStore store) {


        NodeAVLDisk node = this;
        RowAVLDisk  row  = this.row;


        if (!row.isInMemory()) {
            row  = (RowAVLDisk) store.get(this.row, false);
            node = (NodeAVLDisk) row.getNode(iId);
        }


        if (node.iRight == NO_POS) {
            return null;
        }

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    }


    NodeAVL getParent(PersistentStore store) {


        NodeAVLDisk node = this;
        RowAVLDisk  row  = this.row;


        if (!row.isInMemory()) {
            row  = (RowAVLDisk) store.get(this.row, false);
            node = (NodeAVLDisk) row.getNode(iId);
        }


        if (node.iParent == NO_POS) {
            return null;
        }

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    }


    NodeAVL setParent(PersistentStore store, NodeAVL n) {


        NodeAVLDisk node = this;
        RowAVLDisk  row  = this.row;


        if (!row.keepInMemory(true)) {
            row  = (RowAVLDisk) store.get(this.row, true);
            node = (NodeAVLDisk) row.getNode(iId);
        }


        if (!row.isInMemory()) {
            throw Error.runtimeError(ErrorCode.U_S0500, "NAVLD");
        }


        row.setNodesChanged();


        node.iParent = n == null ? NO_POS
                                 : n.getPos();


        if (n != null && !n.isInMemory()) {
            n = findNode(store, n.getPos());
        }


        node.nParent = (NodeAVLDisk) n;


        row.keepInMemory(false);


        return node;
    }

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    }


    public NodeAVL setBalance(PersistentStore store, int b) {


        NodeAVLDisk node = this;
        RowAVLDisk  row  = this.row;


        if (!row.keepInMemory(true)) {
            row  = (RowAVLDisk) store.get(this.row, true);
            node = (NodeAVLDisk) row.getNode(iId);
        }


        if (!row.isInMemory()) {
            throw Error.runtimeError(ErrorCode.U_S0500, "NAVLD");
        }


        row.setNodesChanged();


        node.iBalance = b;


        row.keepInMemory(false);


        return node;
    }

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    }


    NodeAVL setLeft(PersistentStore store, NodeAVL n) {


        NodeAVLDisk node = this;
        RowAVLDisk  row  = this.row;


        if (!row.keepInMemory(true)) {
            row  = (RowAVLDisk) store.get(this.row, true);
            node = (NodeAVLDisk) row.getNode(iId);
        }


        if (!row.isInMemory()) {
            throw Error.runtimeError(ErrorCode.U_S0500, "NAVLD");
        }


        row.setNodesChanged();


        node.iLeft = n == null ? NO_POS
                               : n.getPos();


        if (n != null && !n.isInMemory()) {
            n = findNode(store, n.getPos());
        }


        node.nLeft = (NodeAVLDisk) n;


        row.keepInMemory(false);


        return node;
    }

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    }


    NodeAVL setRight(PersistentStore store, NodeAVL n) {


        NodeAVLDisk node = this;
        RowAVLDisk  row  = this.row;


        if (!row.keepInMemory(true)) {
            row  = (RowAVLDisk) store.get(this.row, true);
            node = (NodeAVLDisk) row.getNode(iId);
        }


        if (!row.isInMemory()) {
            throw Error.runtimeError(ErrorCode.U_S0500, "NAVLD");
        }


        row.setNodesChanged();


        node.iRight = n == null ? NO_POS
                                : n.getPos();


        if (n != null && !n.isInMemory()) {
            n = findNode(store, n.getPos());
        }


        node.nRight = (NodeAVLDisk) n;


        row.keepInMemory(false);


        return node;
    }

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Related Classes of org.hsqldb_voltpatches.RowAVLDisk

org.hsqldb_voltpatches.index.NodeAVL

org.hsqldb_voltpatches.index.NodeAVLDisk

org.hsqldb_voltpatches.persist.RowStoreAVLDisk

org.hsqldb_voltpatches.persist.RowStoreAVLHybrid

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