/**
* Return the XMIHeader for the specified File or null if the file does not represent a MetaMatrix
* model file.
*
* @param resource The file of a metamatrix model file.
* @return The XMIHeader for the model file
*/
public static XMIHeader getXmiHeader(final File resource) {
if (resource != null && resource.isFile() && resource.exists() && resource.canRead()) {
// check cache
if (CACHE != null) {
XMIHeader header = CACHE.getCachedXmiHeader(resource);
if (header != null) {
return header;
}
}
try {
XMIHeader header = XMIHeaderReader.readHeader(resource);
// add to cache
if (CACHE != null) {
CACHE.setXmiHeaderToCache(resource, header);
}
return header;
} catch (TeiidException e) {
LogManager.logWarning(RuntimeMetadataPlugin.PLUGIN_ID, e, e.getMessage());
} catch (IllegalArgumentException iae) {
// Swallowing this exception because we're doing all three checks that would produce it.
// If this exception is caught, it's because the files really were closed/deleted in another
// thread and this
// thread didn't know about it.
// Fixes Defect 22117
}
}
return null;
}
// GHH 20080326 - set all batches as last batch after an exception
// is thrown calling a method on the enumeration. Per Javadoc for
// javax.naming.NamingEnumeration, enumeration is invalid after an
// exception is thrown - by setting last batch indicator we prevent
// it from being used again.
// GHH 20080326 - also added return of explanation for generic
// NamingException
public List<?> next() throws TranslatorException {
try {
if (unwrapIterator != null) {
if (unwrapIterator.hasNext()) {
return unwrapIterator.next();
}
unwrapIterator = null;
}
// The search has been executed, so process up to one batch of
// results.
List<?> result = null;
while (result == null && searchEnumeration != null && searchEnumeration.hasMore()) {
SearchResult searchResult = (SearchResult) searchEnumeration.next();
try {
result = getRow(searchResult);
} catch (InvalidNameException e) {
}
}
if (result == null && this.executionFactory.usePagination()) {
byte[] cookie = null;
Control[] controls = ldapCtx.getResponseControls();
if (controls != null) {
for (int i = 0; i < controls.length; i++) {
if (controls[i] instanceof PagedResultsResponseControl) {
PagedResultsResponseControl prrc = (PagedResultsResponseControl) controls[i];
cookie = prrc.getCookie();
}
}
}
if (cookie == null) {
return null;
}
setRequestControls(cookie);
executeSearch();
return next();
}
if (result != null) {
resultCount++;
}
return result;
} catch (SizeLimitExceededException e) {
if (resultCount != searchDetails.getCountLimit()) {
String msg = LDAPPlugin.Util.gs(LDAPPlugin.Event.TEIID12008);
TranslatorException te = new TranslatorException(e, msg);
if (executionFactory.isExceptionOnSizeLimitExceeded()) {
throw te;
}
this.executionContext.addWarning(te);
LogManager.logWarning(LogConstants.CTX_CONNECTOR, e, msg);
}
return null; // GHH 20080326 - if size limit exceeded don't try to read more results
} catch (NamingException ne) {
throw new TranslatorException(ne, LDAPPlugin.Util.gs("ldap_error")); // $NON-NLS-1$
}
}
/**
* Return the XMIHeader for the specified inputstream of a model file.
*
* @param resourceStream The inputStream of a metamatrix model file.
* @return The XMIHeader for the model file
*/
public static XMIHeader getXmiHeader(final InputStream resourceStream) {
if (resourceStream != null) {
try {
return XMIHeaderReader.readHeader(resourceStream);
} catch (TeiidException e) {
LogManager.logWarning(RuntimeMetadataPlugin.PLUGIN_ID, e, e.getMessage());
}
}
return null;
}
// GHH 20080326 - replaced existing implementation with the same
// code as used by cancel method. First try to
// close the searchEnumeration, then the search context
// We are very conservative when closing the enumeration
// but less so when closing context, since it is safe to call close
// on contexts multiple times
@Override
public void close() {
if (searchEnumeration != null) {
try {
searchEnumeration.close();
} catch (Exception e) {
} // catch everything, because NamingEnumeration has undefined behavior if it previously hit
// an exception
}
if (ldapCtx != null) {
try {
ldapCtx.close();
} catch (NamingException ne) {
LogManager.logWarning(
LogConstants.CTX_CONNECTOR,
LDAPPlugin.Util.gs(LDAPPlugin.Event.TEIID12003, ne.getExplanation()));
}
}
}
// GHH 20080326 - added resultDistinguishedName to method signature. If
// there is an element in the model named "DN" and there is no attribute
// with this name in the search result, we return this new parameter
// value for that column in the result
// GHH 20080326 - added handling of ClassCastException when non-string
// attribute is returned
private Object getValue(
Column modelElement, SearchResult result, Attributes attrs, boolean unwrap)
throws TranslatorException, InvalidNameException {
String modelAttrName = modelElement.getSourceName();
Class<?> modelAttrClass = modelElement.getJavaType();
String multivalAttr = modelElement.getDefaultValue();
if (modelAttrName == null) {
final String msg =
LDAPPlugin.Util.getString("LDAPSyncQueryExecution.nullAttrError"); // $NON-NLS-1$
throw new TranslatorException(msg);
}
Attribute resultAttr = attrs.get(modelAttrName);
// If the attribute is not present, we return NULL.
if (resultAttr == null) {
// GHH 20080326 - return DN from input parameter
// if DN attribute is not present in search result
if (modelAttrName.equalsIgnoreCase("DN")) { // $NON-NLS-1$
return result.getNameInNamespace();
}
return null;
}
Object objResult = null;
try {
if (TypeFacility.RUNTIME_TYPES.STRING.equals(modelAttrClass)
&& MULTIVALUED_CONCAT.equalsIgnoreCase(multivalAttr)) {
// mpw 5/09
// Order the multi-valued attrs alphabetically before creating a single string,
// using the delimiter to separate each token
ArrayList<String> multivalList = new ArrayList<String>();
NamingEnumeration<?> attrNE = resultAttr.getAll();
int length = 0;
while (attrNE.hasMore()) {
String val = (String) attrNE.next();
multivalList.add(val);
length += ((val == null ? 0 : val.length()) + 1);
}
Collections.sort(multivalList);
StringBuilder multivalSB = new StringBuilder(length);
Iterator<String> itr = multivalList.iterator();
while (itr.hasNext()) {
multivalSB.append(itr.next());
if (itr.hasNext()) {
multivalSB.append(delimiter);
}
}
return multivalSB.toString();
}
if (modelAttrClass.isArray()) {
return getArray(modelAttrClass.getComponentType(), resultAttr, modelElement, modelAttrName);
}
if (unwrap && resultAttr.size() > 1) {
return getArray(modelAttrClass, resultAttr, modelElement, modelAttrName);
}
// just a single value
objResult = resultAttr.get();
} catch (NamingException ne) {
final String msg =
LDAPPlugin.Util.gs(LDAPPlugin.Event.TEIID12004, modelAttrName)
+ " : "
+ ne.getExplanation(); // $NON-NLS-1$m
LogManager.logWarning(LogConstants.CTX_CONNECTOR, msg);
throw new TranslatorException(ne, msg);
}
return convertSingleValue(modelElement, modelAttrName, modelAttrClass, objResult);
}
@Override
public String getSourceComment(ExecutionContext context, Command command) {
String comment = super.getSourceComment(context, command);
boolean usingPayloadComment = false;
if (context != null) {
// Check for db hints
Object payload = context.getCommandPayload();
if (payload instanceof String) {
String payloadString = (String) payload;
if (payloadString.startsWith(HINT_PREFIX)) {
int i = payloadString.indexOf(HINT_SUFFIX);
if (i > 0 && payloadString.substring(i + 2).trim().length() == 0) {
comment += payloadString + " "; // $NON-NLS-1$
usingPayloadComment = true;
} else {
String msg =
JDBCPlugin.Util.gs(
JDBCPlugin.Event.TEIID11003, "Execution Payload", payloadString); // $NON-NLS-1$
context.addWarning(new TranslatorException(msg));
LogManager.logWarning(LogConstants.CTX_CONNECTOR, msg);
}
}
}
}
if (!usingPayloadComment && context != null) {
String hint = context.getSourceHint();
if (context.getGeneralHint() != null) {
if (hint != null) {
hint += (" " + context.getGeneralHint()); // $NON-NLS-1$
} else {
hint = context.getGeneralHint();
}
}
if (hint != null) {
// append a source hint
if (!hint.contains(HINT_PREFIX)) {
comment += HINT_PREFIX + ' ' + hint + ' ' + HINT_SUFFIX + ' ';
} else {
String msg =
JDBCPlugin.Util.gs(JDBCPlugin.Event.TEIID11003, "Source Hint", hint); // $NON-NLS-1$
context.addWarning(new TranslatorException(msg));
LogManager.logWarning(LogConstants.CTX_CONNECTOR, msg);
}
}
}
if (command instanceof Select) {
//
// This simple algorithm determines the hint which will be added to the
// query.
// Right now, we look through all functions passed in the query
// (returned as a collection)
// Then we check if any of those functions are sdo_relate
// If so, the ORDERED hint is added, if not, it isn't
Collection<Function> col = CollectorVisitor.collectObjects(Function.class, command);
for (Function func : col) {
if (func.getName().equalsIgnoreCase(OracleExecutionFactory.RELATE)) {
return comment + "/*+ ORDERED */ "; // $NON-NLS-1$
}
}
}
return comment;
}
