public static void main(String[] args) {
DbClient client = null;
try {
client = new DbClient();
client.connect();
// client.runUpdate("INSERT INTO DrWeb VALUES(0,null,null,'boogle','worp')");
// ResultSet rs =
// client.runQuery("SELECT LASTNAME FROM DrWeb WHERE FIRSTNAME='worp'"
// );
ResultSet rs = client.runQuery("SELECT LASTNAME FROM DrWeb");
while (rs.next()) {
System.out.println("lastname=" + rs.getString(1));
}
} catch (SQLException e) {
e.printStackTrace();
} catch (DbException e) {
e.printStackTrace();
} finally {
if ((client != null) && client.isConnected()) {
try {
client.disconnect();
} catch (DbException e) {
}
}
}
System.exit(0);
}
/**
* Inserts tuples read from child into the tableid specified by the constructor. It returns a one
* field tuple containing the number of inserted records. Inserts should be passed through
* BufferPool. An instances of BufferPool is available via Database.getBufferPool(). Note that
* insert DOES NOT need check to see if a particular tuple is a duplicate before inserting it.
*
* @return A 1-field tuple containing the number of inserted records, or null if called more than
* once.
* @see Database#getBufferPool
* @see BufferPool#insertTuple
*/
protected Tuple fetchNext() throws TransactionAbortedException, DbException {
Tuple result = new Tuple(td); // use to store the insertion result
int count = 0; // use to keep track of numbers of tuple insertion
if (fetchNextNum
> 0) // meaning this is not the first time calling fetchNext(), and should not return any
// tuples
return null;
else {
try {
while (dbIt.hasNext()) {
try {
Database.getBufferPool().insertTuple(tranId, tableId, dbIt.next());
} catch (IOException e) {
e.printStackTrace();
}
count++;
}
result.setField(0, new IntField(count));
fetchNextNum++;
} catch (DbException e) {
e.printStackTrace();
} catch (TransactionAbortedException e) {
e.printStackTrace();
}
}
return result;
}
public void rewind() throws DbException, TransactionAbortedException {
try {
dbIt.rewind();
} catch (DbException e) {
e.printStackTrace();
} catch (TransactionAbortedException e) {
e.printStackTrace();
}
}
public boolean expand(Writer output, Serializable object, RuleOptions options)
throws IOException, RuleException {
boolean expanded = false;
boolean prefixPrinted = false;
boolean atLeastOneChildPrinted = false;
if (object == null) {
if (Debug.isDebug()) {
throw new NullPointerException(); // disclose programming error
// in debug..
} else {
return false;
}
} // end if
if (!(object instanceof DbObject)) {
return false;
} // end if
DbObject dbObject = (DbObject) object;
MetaRelationship metaRelation = getMetaRelation(dbObject);
MetaClass childrenMetaClass = getChildrenMetaClass();
try {
// get metaRelation from its string representation
if (metaRelation == null)
metaRelation = (MetaRelationship) getMetaField(dbObject, sConnector);
boolean state[] = {prefixPrinted, atLeastOneChildPrinted};
if (metaRelation instanceof MetaRelation1) {
MetaRelation1 metaRelation1 = (MetaRelation1) metaRelation;
expanded |=
expandMetaRelation1(output, dbObject, metaRelation1, state, childrenMetaClass, options);
} else if (metaRelation instanceof MetaRelationN) {
expanded |=
expandMetaRelationN(output, dbObject, metaRelation, state, childrenMetaClass, options);
} else if (metaRelation instanceof MetaChoice) {
MetaChoice choice = (MetaChoice) metaRelation;
expanded |= expandMetaChoice(output, dbObject, choice, state, childrenMetaClass, options);
} else {
// TODO: throw 'meta-relationship not supported'
}
super.terminate(output, options);
} catch (DbException ex) {
String msg = ex.getMessage();
throw new RuleException(msg);
} catch (RuntimeException ex) {
String conn = m_connector.getGUIName();
String objectKind = dbObject.getMetaClass().getGUIName();
String msg = InvalidConnectorRuleException.buildMessage(m_ruleName, conn, objectKind);
throw new InvalidConnectorRuleException(msg);
}
return expanded;
}
private DbJVClass importClass(JavaClass claz, Controller controller) throws DbException {
String packName = claz.getPackageName();
String qualifiedName = claz.getClassName();
int idx = qualifiedName.lastIndexOf('.');
String classname = qualifiedName.substring(idx + 1);
DbJVClass dbClaz = null;
try {
if (m_classModel != null) {
DbJVPackage pack = findPackageByName(packName);
// create class or interface
int value = claz.isInterface() ? JVClassCategory.INTERFACE : JVClassCategory.CLASS;
JVClassCategory catg = JVClassCategory.getInstance(value);
dbClaz =
(pack == null) ? new DbJVClass(this.m_classModel, catg) : new DbJVClass(pack, catg);
dbClaz.setName(classname);
// set class modifiers
dbClaz.setAbstract(claz.isAbstract());
dbClaz.setFinal(claz.isFinal());
dbClaz.setStatic(claz.isStatic());
dbClaz.setStrictfp(claz.isStrictfp());
dbClaz.setVisibility(toVisibility(claz));
// create inheritances
importInheritances(dbClaz, claz);
// create fields
if (m_params.createFields) {
Field[] fields = claz.getFields();
for (Field field : fields) {
importField(dbClaz, field);
}
}
// create methods
if (m_params.createMethods) {
Method[] methods = claz.getMethods();
for (Method method : methods) {
importMethod(dbClaz, method);
}
}
// keep user informed of progression
String pattern = LocaleMgr.misc.getString("0SuccessfullyCreated");
String msg = MessageFormat.format(pattern, qualifiedName);
controller.println(msg);
} // end if
} catch (DbException ex) {
controller.println(ex.toString());
} // end try
return dbClaz;
} // end importClass()
public void open() throws DbException, TransactionAbortedException {
try {
super.open();
dbIt.open();
} catch (DbException e) {
e.printStackTrace();
} catch (TransactionAbortedException e) {
e.printStackTrace();
}
}
// see DbFile.java for javadocs
public DbFileIterator iterator(TransactionId tid) {
try {
return new HeapFileIterator(tid, this);
} catch (DbException dbe) {
dbe.printStackTrace();
} catch (TransactionAbortedException transe) {
transe.printStackTrace();
} catch (NoSuchElementException nosuche) {
nosuche.printStackTrace();
}
return null;
}
/**
* Create a new TableStats object, that keeps track of statistics on each column of a table
*
* @param tableid The table over which to compute statistics
* @param ioCostPerPage The cost per page of IO. This doesn't differentiate between
* sequential-scan IO and disk seeks.
*/
public TableStats(int tableid, int ioCostPerPage) {
// For this function, we use the DbFile for the table in question,
// then scan through its tuples and calculate the values that you
// to build the histograms.
// TODO: Fill out the rest of the constructor.
// Feel free to change anything already written, it's only a guideline
this.ioCostPerPage = ioCostPerPage;
DbFile file = Database.getCatalog().getDbFile(tableid);
tupleDesc = file.getTupleDesc();
numPages = ((HeapFile) file).numPages();
numTuples = 0;
int numFields = tupleDesc.numFields();
// TODO: what goes here?
statistics = new ArrayList<Object>();
for (int i = 0; i < numFields; i++) {
if (Type.INT_TYPE.equals(tupleDesc.getFieldType(i))) {
statistics.add(new IntStatistics(NUM_HIST_BINS));
} else {
statistics.add(new StringHistogram(NUM_HIST_BINS));
}
}
final DbFileIterator iter = file.iterator(null);
try {
iter.open();
while (iter.hasNext()) {
Tuple t = iter.next();
numTuples++;
// TODO: and here?
for (int i = 0; i < numFields; i++) {
if (Type.INT_TYPE.equals(tupleDesc.getFieldType(i))) {
((IntStatistics) statistics.get(i)).addValue(((IntField) t.getField(i)).getValue());
} else {
((StringHistogram) statistics.get(i))
.addValue(((StringField) t.getField(i)).getValue());
}
}
}
iter.close();
} catch (DbException e) {
e.printStackTrace();
} catch (TransactionAbortedException e) {
e.printStackTrace();
}
}
@Override
protected void runJob() throws Exception {
Controller controller = getController();
// is invoked head less?
DefaultMainFrame mainFrame = ApplicationContext.getDefaultMainFrame();
boolean headless = (mainFrame == null);
Db db = null;
try {
if (!headless) {
// create new project, if it was not specific by the user
m_project = m_params.getOutputProject();
if (m_project == null) {
m_project = (DbSMSProject) mainFrame.createDefaultProject(db);
}
db = m_project.getDb();
db.beginWriteTrans(LocaleMgr.misc.getString("ImportJavaBytecode"));
// create class model
m_classModel = new DbJVClassModel(m_project);
}
// import Java classes files (jobDone 0% to 80%)
DbJVPackage topMostPackage = importFiles(controller, 0, 80);
// show success/failure message
if (controller.getErrorsCount() == 0) {
controller.println(LocaleMgr.misc.getString("Success"));
} else {
controller.println(LocaleMgr.misc.getString("Failed"));
} // end if
// create and reveal diagram ((jobDone 80% to 100%)
if (!headless) {
if ((topMostPackage != null) && (m_params.createDiagrams)) {
createAndRevealDiagram(mainFrame, topMostPackage, controller, 80, 100);
}
db.commitTrans();
} // end if
controller.checkPoint(100);
} catch (DbException ex) {
controller.println(ex.toString());
controller.cancel();
} // end try
} // end runJob()
/**
* Set the file trace level.
*
* @param level the new level
*/
public void setLevelFile(int level) {
if (level == ADAPTER) {
String adapterClass = "org.h2.message.TraceWriterAdapter";
try {
writer = (TraceWriter) Class.forName(adapterClass).newInstance();
} catch (Throwable e) {
e = DbException.get(ErrorCode.CLASS_NOT_FOUND_1, e, adapterClass);
write(ERROR, Trace.DATABASE, adapterClass, e);
return;
}
String name = fileName;
if (name != null) {
if (name.endsWith(Constants.SUFFIX_TRACE_FILE)) {
name = name.substring(0, name.length() - Constants.SUFFIX_TRACE_FILE.length());
}
int idx = Math.max(name.lastIndexOf('/'), name.lastIndexOf('\\'));
if (idx >= 0) {
name = name.substring(idx + 1);
}
writer.setName(name);
}
}
levelFile = level;
updateLevel();
}
private void logWritingError(Exception e) {
if (writingErrorLogged) {
return;
}
writingErrorLogged = true;
Exception se = DbException.get(ErrorCode.TRACE_FILE_ERROR_2, e, fileName, e.toString());
// print this error only once
fileName = null;
sysOut.println(se);
se.printStackTrace();
}
