VariableInstanceDbTest.java

/*
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 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jbpm.context.exe;

import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

import org.jbpm.JbpmException;
import org.jbpm.context.def.ContextDefinition;
import org.jbpm.db.AbstractDbTestCase;
import org.jbpm.graph.def.ProcessDefinition;
import org.jbpm.graph.exe.ProcessInstance;

public class VariableInstanceDbTest extends AbstractDbTestCase {

  ProcessInstance processInstance;
  ContextInstance contextInstance;

  protected void setUp() throws Exception {
    super.setUp();

    ProcessDefinition processDefinition = new ProcessDefinition(getName());
    processDefinition.addDefinition(new ContextDefinition());
    deployProcessDefinition(processDefinition);

    processInstance = new ProcessInstance(processDefinition);
    contextInstance = processInstance.getContextInstance();
  }

  public void testVariableInstanceString() {
    contextInstance.setVariable("comment", "it's not the size that matters, it's how you use it.");

    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();

    assertEquals("it's not the size that matters, it's how you use it.", contextInstance.getVariable("comment"));
  }

  public void testVariableInstanceLong() {
    contextInstance.setVariable("new salary", new Long(500000));

    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();

    assertEquals(new Long(500000), contextInstance.getVariable("new salary"));
  }

  public void testVariableInstanceByteArray() {
    String text = "oh, what a wonderful world";
    for (int i = 0; i < 10; i++)
      text += text;
    byte[] bytes = text.getBytes();
    assertEquals(text, new String(bytes));
    contextInstance.setVariable("a lot of bytes", bytes);

    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    bytes = (byte[]) contextInstance.getVariable("a lot of bytes");
    assertEquals(text, new String(bytes));
  }

  public void testString() {
    contextInstance.setVariable("a", new String("3"));
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    assertEquals("3", contextInstance.getVariable("a"));
  }

  public void testBoolean() {
    contextInstance.setVariable("a", Boolean.TRUE);
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    assertEquals(Boolean.TRUE, contextInstance.getVariable("a"));
  }

  public void testCharacter() {
    contextInstance.setVariable("a", new Character('c'));
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    assertEquals(new Character('c'), contextInstance.getVariable("a"));
  }

  public void testFloat() {
    contextInstance.setVariable("a", new Float(3.3));
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    assertEquals(new Float(3.3), contextInstance.getVariable("a"));
  }

  public void testDouble() {
    contextInstance.setVariable("a", new Double(3.3));
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    assertEquals(new Double(3.3), contextInstance.getVariable("a"));
  }

  public void testCustomTypeSerializable() {
    contextInstance.setVariable("a", new MySerializableClass(4));
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    assertEquals(new MySerializableClass(4), contextInstance.getVariable("a"));
  }

  public void testLong() {
    contextInstance.setVariable("a", new Long(3));
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    assertEquals(new Long(3), contextInstance.getVariable("a"));
  }

  public void testByte() {
    contextInstance.setVariable("a", new Byte("3"));
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    assertEquals(new Byte("3"), contextInstance.getVariable("a"));
  }

  public void testShort() {
    contextInstance.setVariable("a", new Short("3"));
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    assertEquals(new Short("3"), contextInstance.getVariable("a"));
  }

  public void testInteger() {
    contextInstance.setVariable("a", new Integer(3));
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    assertEquals(new Integer(3), contextInstance.getVariable("a"));
  }

  public void testDate() {
    // discard milliseconds as some databases have second precision only
    Calendar calendar = Calendar.getInstance();
    calendar.set(Calendar.MILLISECOND, 0);
    Date now = calendar.getTime();
    contextInstance.setVariable("a", now);
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();

    Date result = (Date) contextInstance.getVariable("a");
    assertEquals(now, result);
  }

  public void testNullUpdate() {
    contextInstance.setVariable("a", "blablabla");
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    contextInstance.setVariable("a", null);
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    assertNull(contextInstance.getVariable("a"));
  }

  public void testChangeTypeWithDeleteIsAllowed() {
    contextInstance.setVariable("a", new String("3"));
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    contextInstance.deleteVariable("a");
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    contextInstance.setVariable("a", new Integer(3));
  }

  public void testSerializableCollection() {
    List l = new ArrayList();
    l.add("one");
    l.add("two");
    l.add("three");
    contextInstance.setVariable("l", l);
    processInstance = saveAndReload(processInstance);
    contextInstance = processInstance.getContextInstance();
    assertEquals(l, contextInstance.getVariable("l"));
  }

  public void testNonStorableType() {
    contextInstance.setVariable("t", new Thread());
    try {
      jbpmContext.save(processInstance);
      fail("expected exception");
    }
    catch (JbpmException e) {
      // OK
      // let's make sure the auto flushing of hibernate doesn't explode
      contextInstance.deleteVariable("t");
    }
  }
}