| /* |
| |
| Derby - Class org.apache.derby.impl.sql.conn.SQLSessionContextImpl |
| |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to you under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| |
| */ |
| |
| package org.apache.derby.impl.sql.conn; |
| |
| import java.util.HashMap; |
| import org.apache.derby.catalog.UUID; |
| import org.apache.derby.iapi.sql.conn.SQLSessionContext; |
| import org.apache.derby.iapi.sql.dictionary.SchemaDescriptor; |
| |
| public class SQLSessionContextImpl implements SQLSessionContext { |
| |
| private String currentUser; |
| private String currentRole; |
| private SchemaDescriptor currentDefaultSchema; |
| |
| /** |
| * Maps a constraint id (key) into a Boolean for deferrable |
| * constraints. |
| * If the Boolean value is {@code FALSE}, we have immediate |
| * checking, if it is {@code TRUE} we have deferred checking. Cf. SQL |
| * SET CONSTRAINT. |
| */ |
| private HashMap<UUID, Boolean> constraintModes; |
| |
| /** |
| * True if all deferrable constraints are deferred in this transaction. |
| */ |
| private Boolean deferredAll; |
| |
| public SQLSessionContextImpl ( |
| SchemaDescriptor sd, |
| String currentUser) { |
| currentRole = null; |
| currentDefaultSchema = sd; |
| this.currentUser = currentUser; |
| } |
| |
| public void setRole(String role) { |
| currentRole = role; |
| } |
| |
| public String getRole() { |
| return currentRole; |
| } |
| |
| public void setUser(String user) { |
| currentUser = user; |
| } |
| |
| public String getCurrentUser() { |
| return currentUser; |
| } |
| |
| public void setDefaultSchema(SchemaDescriptor sd) { |
| currentDefaultSchema = sd; |
| } |
| |
| public SchemaDescriptor getDefaultSchema() { |
| return currentDefaultSchema; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public HashMap<UUID, Boolean> getConstraintModes() { |
| return constraintModes != null ? |
| new HashMap<UUID, Boolean>(constraintModes) : |
| null; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void setConstraintModes(HashMap<UUID, Boolean> hm) { |
| this.constraintModes = hm != null ? |
| new HashMap<UUID, Boolean>(hm) : null; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void setDeferred(UUID constraintId, boolean deferred) { |
| if (constraintModes == null) { |
| constraintModes = new HashMap<UUID, Boolean>(); |
| } |
| |
| constraintModes.put(constraintId, Boolean.valueOf(deferred)); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public Boolean isDeferred(UUID constraintId) { |
| Boolean v = null; |
| |
| if (constraintModes != null) { |
| v = constraintModes.get(constraintId); |
| } |
| |
| if (v != null) { |
| return v; // Trumps ALL setting since it must have been |
| // set later otherwise it would have been |
| // deleted |
| } else { |
| return deferredAll; |
| } |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void resetConstraintModes() { |
| if (constraintModes != null) { |
| constraintModes.clear(); |
| } |
| |
| deferredAll = null; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void setDeferredAll(Boolean deferred) { |
| deferredAll = deferred; |
| // This now overrides any individual constraint setting, so |
| // clear those. |
| if (constraintModes != null) { |
| constraintModes.clear(); |
| } |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public Boolean getDeferredAll() { |
| return deferredAll; |
| } |
| } |