SimpleStore.java

/* Copyright (c) 2001-2014, The HSQL Development Group
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 * modification, are permitted provided that the following conditions are met:
 *
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 * list of conditions and the following disclaimer.
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package org.hsqldb.persist;

import org.hsqldb.HsqlException;
import org.hsqldb.Row;
import org.hsqldb.RowAction;
import org.hsqldb.Session;
import org.hsqldb.TableBase;
import org.hsqldb.error.Error;
import org.hsqldb.error.ErrorCode;
import org.hsqldb.index.Index;
import org.hsqldb.navigator.RowIterator;
import org.hsqldb.rowio.RowInputInterface;

/**
 * @author Fred Toussi (fredt@users dot sourceforge.net)
 * @version 2.3.2
 * @since 2.3.0
 */
public abstract class SimpleStore implements PersistentStore {

    public DataFileCache        cache;
    protected TableSpaceManager spaceManager;
    long                        storageSize;
    protected int               defaultObjectSize;

    public void set(CachedObject object) {}

    public CachedObject get(long i) {
        return cache.get(i, this, false);
    }

    public CachedObject get(CachedObject object, boolean keep) {
        return cache.get(object, this, keep);
    }

    public CachedObject get(long i, boolean keep) {
        return cache.get(i, this, keep);
    }

    public void remove(CachedObject object) {

        if (cache != null) {
            cache.remove(object);
            spaceManager.release(object.getPos(), object.getStorageSize());
        }
    }

    public boolean canRead(Session session, long pos, int mode, int[] colMap) {
        return true;
    }

    public boolean canRead(Session session, CachedObject object, int mode,
                           int[] colMap) {
        return true;
    }

    public void commitPersistence(CachedObject object) {}

    public int getDefaultObjectSize() {
        return defaultObjectSize;
    }

    public CachedObject getNewCachedObject(Session session, Object object,
                                           boolean tx) throws HsqlException {
        throw Error.runtimeError(ErrorCode.U_S0500, "PersistentStore");
    }

    public void removeAll() {}

    public DataFileCache getCache() {
        return cache;
    }

    public TableSpaceManager getSpaceManager() {
        return spaceManager;
    }

    public void setSpaceManager(TableSpaceManager manager) {
        spaceManager = manager;
    }

    public boolean isMemory() {
        return cache == null;
    }

    public void reindex(Session session, Index index) {}

    public void setCache(DataFileCache cache) {
        this.cache = cache;
    }

    public void release() {}

    public PersistentStore getAccessorStore(Index index) {
        return null;
    }

    public CachedObject getAccessor(Index key) {
        return null;
    }

    public double searchCost(Session session, Index idx, int count,
                             int opType) {
        return 1;
    }

    public long elementCount() {
        return 0;
    }

    public long elementCount(Session session) {
        return 0;
    }

    public long elementCountUnique(Index index) {
        return 0;
    }

    public void setElementCount(Index key, long size, long uniqueSize) {}

    public void setAccessor(Index key, long accessor) {}

    public void setAccessor(Index key, CachedObject accessor) {}

    public boolean hasNull(int pos) {
        return false;
    }

    public void resetAccessorKeys(Session session,
                                  Index[] keys) throws HsqlException {}

    public void setMemory(boolean mode) {}

    public void delete(Session session, Row row) {}

    public CachedObject get(CachedObject object, RowInputInterface in) {
        return object;
    }

    public void indexRow(Session session, Row row) throws HsqlException {}

    public void indexRows(Session session) throws HsqlException {}

    public RowIterator rowIterator() {
        return null;
    }

    public int getAccessCount() {
        return 0;
    }

    public Index[] getAccessorKeys() {
        return null;
    }

    public void moveDataToSpace(Session session) {}

    public void moveData(Session session, PersistentStore other, int colindex,
                         int adjust) {}

    public void setReadOnly(boolean readonly) {}

    public void writeLock() {}

    public void writeUnlock() {}

    public TableBase getTable() {
        return null;
    }

    public long getTimestamp() {
        return 0;
    }

    public void setTimestamp(long timestamp) {}

    public void commitRow(Session session, Row row, int changeAction,
                          int txModel) {}

    public void rollbackRow(Session session, Row row, int changeAction,
                            int txModel) {}

    public void postCommitAction(Session session, RowAction rowAction) {}
}