Package org.teiid.jdbc

Source Code of org.teiid.jdbc.TestLocalConnections

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* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
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* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
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*/

package org.teiid.jdbc;

import static org.junit.Assert.*;

import java.lang.Thread.UncaughtExceptionHandler;
import java.sql.Connection;
import java.sql.Statement;
import java.util.LinkedHashMap;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.ReentrantLock;

import org.jboss.netty.handler.timeout.TimeoutException;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.teiid.core.types.DataTypeManager;
import org.teiid.metadata.FunctionMethod;
import org.teiid.metadata.FunctionParameter;
import org.teiid.metadata.MetadataStore;
import org.teiid.metadata.Schema;
import org.teiid.metadata.FunctionMethod.PushDown;
import org.teiid.query.function.metadata.FunctionCategoryConstants;
import org.teiid.query.metadata.TransformationMetadata.Resource;

@SuppressWarnings("nls")
public class TestLocalConnections {
 
  private final class SimpleUncaughtExceptionHandler implements
      UncaughtExceptionHandler {
    Throwable t;

    @Override
    public void uncaughtException(Thread arg0, Throwable arg1) {
      t = arg1;
    }
  }

  static ReentrantLock lock = new ReentrantLock();
  static Condition waiting = lock.newCondition();
  static Condition wait = lock.newCondition();
 
  public static int blocking() throws InterruptedException {
    lock.lock();
    try {
      waiting.signal();
      if (!wait.await(2, TimeUnit.SECONDS)) {
        throw new TimeoutException();
      }
    } finally {
      lock.unlock();
    }
    return 1;
  }

  static FakeServer server = new FakeServer();
 
  @BeforeClass public static void oneTimeSetup() {
      server.setUseCallingThread(true);
      MetadataStore ms = new MetadataStore();
      Schema s = new Schema();
      s.setName("test");
      FunctionMethod function = new FunctionMethod("foo", null, FunctionCategoryConstants.MISCELLANEOUS, PushDown.CANNOT_PUSHDOWN, TestLocalConnections.class.getName(), "blocking", new FunctionParameter[0], new FunctionParameter("result", DataTypeManager.DefaultDataTypes.INTEGER), true, FunctionMethod.Determinism.NONDETERMINISTIC);
      s.addFunction(function);
      ms.addSchema(s);
      server.deployVDB("test", ms, new LinkedHashMap<String, Resource>());
  }
 
  @AfterClass public static void oneTimeTearDown() {
    server.stop();
  }
 
  @Test public void testConcurrentExection() throws Throwable {
     
      Thread t = new Thread() {
       
        public void run() {
          try {
              Connection c = server.createConnection("jdbc:teiid:test");
             
              Statement s = c.createStatement();
              s.execute("select foo()");
          } catch (Exception e) {
            throw new RuntimeException(e);
          }
        }
      };
      SimpleUncaughtExceptionHandler handler = new SimpleUncaughtExceptionHandler();
      t.setUncaughtExceptionHandler(handler);
      t.start();
     
      lock.lock();
      try {
        waiting.await();
      } finally {
        lock.unlock();
      }
      Connection c = server.createConnection("jdbc:teiid:test");
      Statement s = c.createStatement();
      s.execute("select * from tables");
     
      lock.lock();
      try {
        wait.signal();
      } finally {
        lock.unlock();
    }
      t.join(2000);
      if (t.isAlive()) {
        fail();
      }
      if (handler.t != null) {
        throw handler.t;
      }
  }
 
}
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