Package org.h2.table

Examples of org.h2.table.TableView

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            // everybody has access to the metadata information
            return true;
        }
        String tableType = table.getTableType();
        if (Table.VIEW.equals(tableType)) {
            TableView v = (TableView) table;
            if (v.getOwner() == this) {
                // the owner of a view has access:
                // SELECT * FROM (SELECT * FROM ...)
                return true;
            }
        } else if (tableType == null) {
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        Table old = session.findLocalTempTable(tempViewName);
        if (old != null) {
            if (!(old instanceof TableView)) {
                throw DbException.get(ErrorCode.TABLE_OR_VIEW_ALREADY_EXISTS_1, tempViewName);
            }
            TableView tv = (TableView) old;
            if (!tv.isTableExpression()) {
                throw DbException.get(ErrorCode.TABLE_OR_VIEW_ALREADY_EXISTS_1, tempViewName);
            }
            session.removeLocalTempTable(old);
        }
        CreateTableData data = new CreateTableData();
        data.id = database.allocateObjectId();
        data.columns = columns;
        data.tableName = tempViewName;
        data.temporary = true;
        data.persistData = true;
        data.persistIndexes = false;
        data.create = true;
        data.session = session;
        recursiveTable = schema.createTable(data);
        session.addLocalTempTable(recursiveTable);
        String querySQL;
        try {
            read("AS");
            read("(");
            Query withQuery = parseSelect();
            read(")");
            withQuery.prepare();
            querySQL = StringUtils.fromCacheOrNew(withQuery.getPlanSQL());
        } finally {
            session.removeLocalTempTable(recursiveTable);
        }
        int id = database.allocateObjectId();
        TableView view = new TableView(schema, id, tempViewName, querySQL, null, cols, session, true);
        view.setTableExpression(true);
        view.setTemporary(true);
        session.addLocalTempTable(view);
        view.setOnCommitDrop(true);
        Query q = parseSelect();
        q.setPrepareAlways(true);
        return q;
    }
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        String viewName = readIdentifierWithSchema();
        Table tableView = getSchema().findTableOrView(session, viewName);
        if (!(tableView instanceof TableView)) {
            throw DbException.get(ErrorCode.VIEW_NOT_FOUND_1, viewName);
        }
        TableView view = (TableView) tableView;
        command.setView(view);
        read("RECOMPILE");
        return command;
    }
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    }

    public int update() {
        session.commit(true);
        Database db = session.getDatabase();
        TableView view = null;
        Table old = getSchema().findTableOrView(session, viewName);
        if (old != null) {
            if (ifNotExists) {
                return 0;
            }
            if (!orReplace || !Table.VIEW.equals(old.getTableType())) {
                throw DbException.get(ErrorCode.VIEW_ALREADY_EXISTS_1, viewName);
            }
            view = (TableView) old;
        }
        int id = getObjectId();
        String querySQL;
        if (select == null) {
            querySQL = selectSQL;
        } else {
            ArrayList<Parameter> params = select.getParameters();
            if (params != null && params.size() > 0) {
                throw DbException.get(ErrorCode.FEATURE_NOT_SUPPORTED_1, "parameters in views");
            }
            querySQL = select.getPlanSQL();
        }
        Session sysSession = db.getSystemSession();
        try {
            if (view == null) {
                Schema schema = session.getDatabase().getSchema(session.getCurrentSchemaName());
                sysSession.setCurrentSchema(schema);
                view = new TableView(getSchema(), id, viewName, querySQL, null, columnNames, sysSession, false);
            } else {
                view.replace(querySQL, columnNames, sysSession, false, force);
            }
        } finally {
            sysSession.setCurrentSchema(db.getSchema(Constants.SCHEMA_MAIN));
        }
        if (comment != null) {
            view.setComment(comment);
        }
        if (old == null) {
            db.addSchemaObject(session, view);
        } else {
            db.update(session, view);
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        boolean recompileSuccessful;
        do {
            recompileSuccessful = false;
            for (Table obj : getAllTablesAndViews(false)) {
                if (obj instanceof TableView) {
                    TableView view = (TableView) obj;
                    if (view.isInvalid()) {
                        try {
                            view.recompile(session);
                        } catch (DbException e) {
                            // ignore
                        }
                        if (!view.isInvalid()) {
                            recompileSuccessful = true;
                        }
                    }
                }
            }
        } while (recompileSuccessful);
        // when opening a database, views are initialized before indexes,
        // so they may not have the optimal plan yet
        // this is not a problem, it is just nice to see the newest plan
        for (Table obj : getAllTablesAndViews(false)) {
            if (obj instanceof TableView) {
                TableView view = (TableView) obj;
                if (!view.isInvalid()) {
                    try {
                        view.recompile(systemSession);
                    } catch (DbException e) {
                        // ignore
                    }
                }
            }
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            // everybody has access to the metadata information
            return true;
        }
        String tableType = table.getTableType();
        if (Table.VIEW.equals(tableType)) {
            TableView v = (TableView) table;
            if (v.getOwner() == this) {
                // the owner of a view has access:
                // SELECT * FROM (SELECT * FROM ...)
                return true;
            }
        } else if (tableType == null) {
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        Table old = session.findLocalTempTable(tempViewName);
        if (old != null) {
            if (!(old instanceof TableView)) {
                throw DbException.get(ErrorCode.TABLE_OR_VIEW_ALREADY_EXISTS_1, tempViewName);
            }
            TableView tv = (TableView) old;
            if (!tv.isTableExpression()) {
                throw DbException.get(ErrorCode.TABLE_OR_VIEW_ALREADY_EXISTS_1, tempViewName);
            }
            session.removeLocalTempTable(old);
        }
        CreateTableData data = new CreateTableData();
        data.id = database.allocateObjectId();
        data.columns = columns;
        data.tableName = tempViewName;
        data.temporary = true;
        data.persistData = true;
        data.persistIndexes = false;
        data.create = true;
        data.session = session;
        recursiveTable = schema.createTable(data);
        session.addLocalTempTable(recursiveTable);
        String querySQL;
        try {
            read("AS");
            read("(");
            Query withQuery = parseSelect();
            read(")");
            withQuery.prepare();
            querySQL = StringUtils.fromCacheOrNew(withQuery.getPlanSQL());
        } finally {
            session.removeLocalTempTable(recursiveTable);
        }
        int id = database.allocateObjectId();
        TableView view = new TableView(schema, id, tempViewName, querySQL, null, cols, session, true);
        view.setTableExpression(true);
        view.setTemporary(true);
        session.addLocalTempTable(view);
        view.setOnCommitDrop(true);
        Query q = parseSelect();
        q.setPrepareAlways(true);
        return q;
    }
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        String viewName = readIdentifierWithSchema();
        Table tableView = getSchema().findTableOrView(session, viewName);
        if (!(tableView instanceof TableView)) {
            throw DbException.get(ErrorCode.VIEW_NOT_FOUND_1, viewName);
        }
        TableView view = (TableView) tableView;
        command.setView(view);
        read("RECOMPILE");
        return command;
    }
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            querySQL = selectSQL;
        } else {
            querySQL = select.getSQL();
        }
        Session sysSession = db.getSystemSession();
        TableView view;
        try {
            Schema schema = session.getDatabase().getSchema(session.getCurrentSchemaName());
            sysSession.setCurrentSchema(schema);
            view = new TableView(getSchema(), id, viewName, querySQL, null, columnNames, sysSession, recursive);
        } finally {
            sysSession.setCurrentSchema(db.getSchema(Constants.SCHEMA_MAIN));
        }
        view.setComment(comment);
        try {
            view.recompileQuery(session);
        } catch (DbException e) {
            // this is not strictly required - ignore exceptions, specially when using FORCE
        }
        db.addSchemaObject(session, view);
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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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