Examples of org.h2.store.Page

org.h2.test.server.TestAutoServer
A page. Format:
- 0-3: parent page id (0 for root)
- 4-4: page type
- page-type specific data

     *
     * @param id the page id
     * @return the page
     */
    PageDataOverflow getPageOverflow(int id) {
        Page p = store.getPage(id);
        if (p instanceof PageDataOverflow) {
            return (PageDataOverflow) p;
        }
        throw DbException.get(ErrorCode.FILE_CORRUPTED_1, p == null ? "null" : p.toString());
    }

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     * @param id the page id
     * @param parent the parent, or -1 if unknown
     * @return the page
     */
    PageData getPage(int id, int parent) {
        Page pd = store.getPage(id);
        if (pd == null) {
            PageDataLeaf empty = PageDataLeaf.create(this, id, parent);
            // could have been created before, but never committed
            store.logUndo(empty, null);
            store.update(empty);

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     *
     * @param id the page id
     * @return the page
     */
    PageDataOverflow getPageOverflow(int id) {
        Page p = store.getPage(id);
        if (p instanceof PageDataOverflow) {
            return (PageDataOverflow) p;
        }
        throw DbException.get(ErrorCode.FILE_CORRUPTED_1, p.toString());
    }

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     * @param id the page id
     * @param parent the parent, or -1 if unknown
     * @return the page
     */
    PageData getPage(int id, int parent) {
        Page pd = store.getPage(id);
        if (pd == null) {
            PageDataLeaf empty = PageDataLeaf.create(this, id, parent);
            // could have been created before, but never committed
            store.logUndo(empty, null);
            store.update(empty);

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        p2.start = start;
        store.update(p2);
        if (parentPageId == ROOT) {
            index.setRootPageId(session, newPos);
        } else {
            Page p = store.getPage(parentPageId);
            if (!(p instanceof PageBtreeNode)) {
                throw DbException.throwInternalError();
            }
            PageBtreeNode n = (PageBtreeNode) p;
            n.moveChild(getPos(), newPos);
        }
        for (int i = 0; i < entryCount + 1; i++) {
            int child = childPageIds[i];
            PageBtree p = index.getPage(child);
            p.setParentPageId(newPos);
            store.update(p);
        }
        store.free(getPos());
    }

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     *
     * @param id the page id
     * @return the page
     */
    PageBtree getPage(int id) {
        Page p = store.getPage(id);
        if (p == null) {
            PageBtreeLeaf empty = PageBtreeLeaf.create(this, id, PageBtree.ROOT);
            // could have been created before, but never committed
            store.logUndo(empty, null);
            store.update(empty);

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    }


    public void moveTo(Session session, int newPos) {
        // load the pages into the cache, to ensure old pages
        // are written
        Page parent = store.getPage(parentPageId);
        if (parent == null) {
            throw DbException.throwInternalError();
        }
        PageDataOverflow next = null;
        if (nextPage != 0) {

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        FileSystem.getInstance("split:").delete("split:" + getBaseDir() + "/openClose2.h2.db");
        Connection conn;
        conn = DriverManager.getConnection("jdbc:h2:split:18:" + getBaseDir() + "/openClose2");
        conn.createStatement().execute("create table test(id int, name varchar) as select 1, space(1000000)");
        conn.close();
        FileObject f = FileSystem.getInstance(getBaseDir()).openFileObject(getBaseDir() + "/openClose2.h2.db.1.part", "rw");
        f.setFileLength(f.length() * 2);
        f.close();
        assertThrows(ErrorCode.IO_EXCEPTION_2, this).
                getConnection("jdbc:h2:split:18:" + getBaseDir() + "/openClose2");
        FileSystem.getInstance("split:").delete("split:" + getBaseDir() + "/openClose2.h2.db");
    }

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        // mvcc & row level locking
        new TestMvcc1().runTest(this);
        new TestMvcc2().runTest(this);
        new TestMvcc3().runTest(this);
        new TestMvccMultiThreaded().runTest(this);
        new TestRowLocks().runTest(this);


        // synth
        new TestBtreeIndex().runTest(this);
        new TestCrashAPI().runTest(this);
        new TestFuzzOptimizations().runTest(this);

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        new TestDataSource().runTest(this);
        new TestXA().runTest(this);
        new TestXASimple().runTest(this);


        // server
        new TestAutoServer().runTest(this);
        new TestNestedLoop().runTest(this);
        new TestWeb().runTest(this);


        // mvcc & row level locking
        new TestMvcc1().runTest(this);

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