Examples of org.hsqldb.RowAVLDisk

org.hsqldb.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 derived from Hypersonic SQL code and enhanced in HSQLDB.
@author Fred Toussi (fredt@users dot sourceforge dot net) @author Thomas Mueller (Hypersonic SQL Group) @version 1.9.0 @since Hypersonic SQL

    }


    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;
        }

View Full Code Here

    }


    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, "NodeAVLDisk");
        }


        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, "NodeAVLDisk");
        }


        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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    }


    public void replace(PersistentStore store, Index index, 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 (node.iParent == NO_POS) {
            if (n != null) {
                n = n.setParent(store, null);
            }


            store.setAccessor(index, n);
        } else {
            boolean isFromLeft = node.isFromLeft(store);


            node.getParent(store).set(store, isFromLeft, n);
        }


        row.keepInMemory(false);
    }

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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;
    }

View Full Code Here

    }


    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;
        }

View Full Code Here

    }


    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;
        }

View Full Code Here

    }


    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;
        }

View Full Code Here

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Related Classes of org.hsqldb.RowAVLDisk

org.hsqldb.index.NodeAVL

org.hsqldb.index.NodeAVLDisk

org.hsqldb.index.NodeAVLDiskLarge

org.hsqldb.persist.RowStoreAVLDisk

org.hsqldb.persist.RowStoreAVLHybrid

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