Package org.h2.table

Examples of org.h2.table.Table

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    private int tryUpdate() {
        if (!transactional) {
            session.commit(true);
        }
        Database db = session.getDatabase();
        Table table = getSchema().getTableOrView(session, tableName);
        if (getSchema().findConstraint(session, constraintName) != null) {
            if (ifNotExists) {
                return 0;
            }
            throw DbException.get(ErrorCode.CONSTRAINT_ALREADY_EXISTS_1, constraintName);
        }
        session.getUser().checkRight(table, Right.ALL);
        db.lockMeta(session);
        table.lock(session, true, true);
        Constraint constraint;
        switch (type) {
        case CommandInterface.ALTER_TABLE_ADD_CONSTRAINT_PRIMARY_KEY: {
            IndexColumn.mapColumns(indexColumns, table);
            index = table.findPrimaryKey();
            ArrayList<Constraint> constraints = table.getConstraints();
            for (int i = 0; constraints != null && i < constraints.size(); i++) {
                Constraint c = constraints.get(i);
                if (Constraint.PRIMARY_KEY.equals(c.getConstraintType())) {
                    throw DbException.get(ErrorCode.SECOND_PRIMARY_KEY);
                }
            }
            if (index != null) {
                // if there is an index, it must match with the one declared
                // we don't test ascending / descending
                IndexColumn[] pkCols = index.getIndexColumns();
                if (pkCols.length != indexColumns.length) {
                    throw DbException.get(ErrorCode.SECOND_PRIMARY_KEY);
                }
                for (int i = 0; i < pkCols.length; i++) {
                    if (pkCols[i].column != indexColumns[i].column) {
                        throw DbException.get(ErrorCode.SECOND_PRIMARY_KEY);
                    }
                }
            }
            if (index == null) {
                IndexType indexType = IndexType.createPrimaryKey(table.isPersistIndexes(), primaryKeyHash);
                String indexName = table.getSchema().getUniqueIndexName(session, table, Constants.PREFIX_PRIMARY_KEY);
                int id = getObjectId();
                try {
                    index = table.addIndex(session, indexName, id, indexColumns, indexType, true, null);
                } finally {
                    getSchema().freeUniqueName(indexName);
                }
            }
            index.getIndexType().setBelongsToConstraint(true);
            int constraintId = getObjectId();
            String name = generateConstraintName(table);
            ConstraintUnique pk = new ConstraintUnique(getSchema(), constraintId, name, table, true);
            pk.setColumns(indexColumns);
            pk.setIndex(index, true);
            constraint = pk;
            break;
        }
        case CommandInterface.ALTER_TABLE_ADD_CONSTRAINT_UNIQUE: {
            IndexColumn.mapColumns(indexColumns, table);
            boolean isOwner = false;
            if (index != null && canUseUniqueIndex(index, table, indexColumns)) {
                isOwner = true;
                index.getIndexType().setBelongsToConstraint(true);
            } else {
                index = getUniqueIndex(table, indexColumns);
                if (index == null) {
                    index = createIndex(table, indexColumns, true);
                    isOwner = true;
                }
            }
            int id = getObjectId();
            String name = generateConstraintName(table);
            ConstraintUnique unique = new ConstraintUnique(getSchema(), id, name, table, false);
            unique.setColumns(indexColumns);
            unique.setIndex(index, isOwner);
            constraint = unique;
            break;
        }
        case CommandInterface.ALTER_TABLE_ADD_CONSTRAINT_CHECK: {
            int id = getObjectId();
            String name = generateConstraintName(table);
            ConstraintCheck check = new ConstraintCheck(getSchema(), id, name, table);
            TableFilter filter = new TableFilter(session, table, null, false, null);
            checkExpression.mapColumns(filter, 0);
            checkExpression = checkExpression.optimize(session);
            check.setExpression(checkExpression);
            check.setTableFilter(filter);
            constraint = check;
            if (checkExisting) {
                check.checkExistingData(session);
            }
            break;
        }
        case CommandInterface.ALTER_TABLE_ADD_CONSTRAINT_REFERENTIAL: {
            Table refTable = refSchema.getTableOrView(session, refTableName);
            session.getUser().checkRight(refTable, Right.ALL);
            if (!refTable.canReference()) {
                throw DbException.get(ErrorCode.FEATURE_NOT_SUPPORTED_1, "Reference " + refTable.getSQL());
            }
            boolean isOwner = false;
            IndexColumn.mapColumns(indexColumns, table);
            if (index != null && canUseIndex(index, table, indexColumns)) {
                isOwner = true;
                index.getIndexType().setBelongsToConstraint(true);
            } else {
                index = getIndex(table, indexColumns);
                if (index == null) {
                    index = createIndex(table, indexColumns, false);
                    isOwner = true;
                }
            }
            if (refIndexColumns == null) {
                Index refIdx = refTable.getPrimaryKey();
                refIndexColumns = refIdx.getIndexColumns();
            } else {
                IndexColumn.mapColumns(refIndexColumns, refTable);
            }
            if (refIndexColumns.length != indexColumns.length) {
                throw DbException.get(ErrorCode.COLUMN_COUNT_DOES_NOT_MATCH);
            }
            boolean isRefOwner = false;
            if (refIndex != null && refIndex.getTable() == refTable) {
                isRefOwner = true;
                refIndex.getIndexType().setBelongsToConstraint(true);
            } else {
                refIndex = null;
            }
            if (refIndex == null) {
                refIndex = getUniqueIndex(refTable, refIndexColumns);
                if (refIndex == null) {
                    refIndex = createIndex(refTable, refIndexColumns, true);
                    isRefOwner = true;
                }
            }
            int id = getObjectId();
            String name = generateConstraintName(table);
            ConstraintReferential ref = new ConstraintReferential(getSchema(), id, name, table);
            ref.setColumns(indexColumns);
            ref.setIndex(index, isOwner);
            ref.setRefTable(refTable);
            ref.setRefColumns(refIndexColumns);
            ref.setRefIndex(refIndex, isRefOwner);
            if (checkExisting) {
                ref.checkExistingData(session);
            }
            constraint = ref;
            refTable.addConstraint(constraint);
            ref.setDeleteAction(deleteAction);
            ref.setUpdateAction(updateAction);
            break;
        }
        default:
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    public void setTableName(String tableName) {
        this.tableName = tableName;
    }

    public int update() {
        Table table = getSchema().getTableOrView(session, tableName);
        session.getUser().checkRight(table, Right.ALL);
        table.lock(session, true, true);
        switch(type) {
        case CommandInterface.ALTER_TABLE_SET_REFERENTIAL_INTEGRITY:
            table.setCheckForeignKeyConstraints(session, value, value ? checkExisting : false);
            break;
        default:
            DbException.throwInternalError("type="+type);
        }
        return 0;
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            database.getSystemSession().commit(true);
            break;
        }
        case SetTypes.COLLATION: {
            session.getUser().checkAdmin();
            Table table = database.getFirstUserTable();
            if (table != null) {
                throw DbException.get(ErrorCode.COLLATION_CHANGE_WITH_DATA_TABLE_1, table.getSQL());
            }
            CompareMode compareMode;
            StringBuilder buff = new StringBuilder(stringValue);
            if (stringValue.equals(CompareMode.OFF)) {
                compareMode = CompareMode.getInstance(null, 0);
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    }

    public int update() {
        tableFilter.startQuery(session);
        tableFilter.reset();
        Table table = tableFilter.getTable();
        session.getUser().checkRight(table, Right.DELETE);
        table.fire(session, Trigger.DELETE, true);
        table.lock(session, true, false);
        RowList rows = new RowList(session);
        int limitRows = -1;
        if (limitExpr != null) {
            Value v = limitExpr.getValue(session);
            if (v != ValueNull.INSTANCE) {
                limitRows = v.getInt();
            }
        }
        try {
            setCurrentRowNumber(0);
            int count = 0;
            while (limitRows != 0 && tableFilter.next()) {
                setCurrentRowNumber(rows.size() + 1);
                if (condition == null || Boolean.TRUE.equals(condition.getBooleanValue(session))) {
                    Row row = tableFilter.get();
                    boolean done = false;
                    if (table.fireRow()) {
                        done = table.fireBeforeRow(session, row, null);
                    }
                    if (!done) {
                        rows.add(row);
                    }
                    count++;
                    if (limitRows >= 0 && count >= limitRows) {
                        break;
                    }
                }
            }
            int rowScanCount = 0;
            for (rows.reset(); rows.hasNext();) {
                if ((++rowScanCount & 127) == 0) {
                    checkCanceled();
                }
                Row row = rows.next();
                table.removeRow(session, row);
                session.log(table, UndoLogRecord.DELETE, row);
            }
            if (table.fireRow()) {
                for (rows.reset(); rows.hasNext();) {
                    Row row = rows.next();
                    table.fireAfterRow(session, row, null, false);
                }
            }
            table.fire(session, Trigger.DELETE, false);
            return count;
        } finally {
            rows.close();
        }
    }
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    public int update() {
        tableFilter.startQuery(session);
        tableFilter.reset();
        RowList rows = new RowList(session);
        try {
            Table table = tableFilter.getTable();
            session.getUser().checkRight(table, Right.UPDATE);
            table.fire(session, Trigger.UPDATE, true);
            table.lock(session, true, false);
            int columnCount = table.getColumns().length;
            // get the old rows, compute the new rows
            setCurrentRowNumber(0);
            int count = 0;
            Column[] columns = table.getColumns();
            while (tableFilter.next()) {
                setCurrentRowNumber(count+1);
                if (condition == null || Boolean.TRUE.equals(condition.getBooleanValue(session))) {
                    Row oldRow = tableFilter.get();
                    Row newRow = table.getTemplateRow();
                    for (int i = 0; i < columnCount; i++) {
                        Expression newExpr = expressionMap.get(columns[i]);
                        Value newValue;
                        if (newExpr == null) {
                            newValue = oldRow.getValue(i);
                        } else if (newExpr == ValueExpression.getDefault()) {
                            Column column = table.getColumn(i);
                            newValue = table.getDefaultValue(session, column);
                        } else {
                            Column column = table.getColumn(i);
                            newValue = column.convert(newExpr.getValue(session));
                        }
                        newRow.setValue(i, newValue);
                    }
                    table.validateConvertUpdateSequence(session, newRow);
                    boolean done = false;
                    if (table.fireRow()) {
                        done = table.fireBeforeRow(session, oldRow, newRow);
                    }
                    if (!done) {
                        rows.add(oldRow);
                        rows.add(newRow);
                    }
                    count++;
                }
            }
            // TODO self referencing referential integrity constraints
            // don't work if update is multi-row and 'inversed' the condition!
            // probably need multi-row triggers with 'deleted' and 'inserted'
            // at the same time. anyway good for sql compatibility
            // TODO update in-place (but if the key changes,
            // we need to update all indexes) before row triggers

            // the cached row is already updated - we need the old values
            table.updateRows(this, session, rows);
            if (table.fireRow()) {
                rows.invalidateCache();
                for (rows.reset(); rows.hasNext();) {
                    Row o = rows.next();
                    Row n = rows.next();
                    table.fireAfterRow(session, o, n, false);
                }
            }
            table.fire(session, Trigger.UPDATE, false);
            return count;
        } finally {
            rows.close();
        }
    }
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        data.session = session;
        boolean isSessionTemporary = data.temporary && !data.globalTemporary;
        if (!isSessionTemporary) {
            db.lockMeta(session);
        }
        Table table = getSchema().createTable(data);
        ArrayList<Sequence> sequences = New.arrayList();
        for (Column c : data.columns) {
            if (c.isAutoIncrement()) {
                int objId = getObjectId();
                c.convertAutoIncrementToSequence(session, getSchema(), objId, data.temporary);
            }
            Sequence seq = c.getSequence();
            if (seq != null) {
                sequences.add(seq);
            }
        }
        table.setComment(comment);
        if (isSessionTemporary) {
            if (onCommitDrop) {
                table.setOnCommitDrop(true);
            }
            if (onCommitTruncate) {
                table.setOnCommitTruncate(true);
            }
            session.addLocalTempTable(table);
        } else {
            db.lockMeta(session);
            db.addSchemaObject(session, table);
        }
        try {
            for (Column c : data.columns) {
                c.prepareExpression(session);
            }
            for (Sequence sequence : sequences) {
                table.addSequence(sequence);
            }
            for (DefineCommand command : constraintCommands) {
                command.setTransactional(transactional);
                command.update();
            }
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        if (!transactional) {
            session.commit(true);
        }
        Database db = session.getDatabase();
        boolean persistent = db.isPersistent();
        Table table = getSchema().getTableOrView(session, tableName);
        session.getUser().checkRight(table, Right.ALL);
        table.lock(session, true, true);
        if (!table.isPersistIndexes()) {
            persistent = false;
        }
        int id = getObjectId();
        if (indexName == null) {
            if (primaryKey) {
                indexName = table.getSchema().getUniqueIndexName(session, table, Constants.PREFIX_PRIMARY_KEY);
            } else {
                indexName = table.getSchema().getUniqueIndexName(session, table, Constants.PREFIX_INDEX);
            }
        }
        if (getSchema().findIndex(session, indexName) != null) {
            if (ifNotExists) {
                return 0;
            }
            throw DbException.get(ErrorCode.INDEX_ALREADY_EXISTS_1, indexName);
        }
        IndexType indexType;
        if (primaryKey) {
            if (table.findPrimaryKey() != null) {
                throw DbException.get(ErrorCode.SECOND_PRIMARY_KEY);
            }
            indexType = IndexType.createPrimaryKey(persistent, hash);
        } else if (unique) {
            indexType = IndexType.createUnique(persistent, hash);
        } else {
            indexType = IndexType.createNonUnique(persistent, hash);
        }
        IndexColumn.mapColumns(indexColumns, table);
        table.addIndex(session, indexName, id, indexColumns, indexType, create, comment);
        return 0;
    }
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        if (index == null) {
            if (!ifExists) {
                throw DbException.get(ErrorCode.INDEX_NOT_FOUND_1, indexName);
            }
        } else {
            Table table = index.getTable();
            session.getUser().checkRight(index.getTable(), Right.ALL);
            Constraint pkConstraint = null;
            ArrayList<Constraint> constraints = table.getConstraints();
            for (int i = 0; constraints != null && i < constraints.size(); i++) {
                Constraint cons = constraints.get(i);
                if (cons.usesIndex(index)) {
                    // can drop primary key index (for compatibility)
                    if (Constraint.PRIMARY_KEY.equals(cons.getConstraintType())) {
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    public int update() {
        session.commit(true);
        Database db = session.getDatabase();
        session.getUser().checkRight(oldTable, Right.ALL);
        Table t = getSchema().findTableOrView(session, newTableName);
        if (t != null && hidden && newTableName.equals(oldTable.getName())) {
            if (!t.isHidden()) {
                t.setHidden(hidden);
                oldTable.setHidden(true);
                db.update(session, oldTable);
            }
            return 0;
        }
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            // MVCC: keep shared locks (insert / update / delete)
            return;
        }
        // locks is modified in the loop
        for (int i = 0; i < locks.size(); i++) {
            Table t = locks.get(i);
            if (!t.isLockedExclusively()) {
                synchronized (database) {
                    t.unlock(this);
                    locks.remove(i);
                }
                i--;
            }
        }
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