/** Searches for objects to return based on the filter provided with offset and limit features. */
public void executeQuery(
ObjectClass oclass, String query, ResultsHandler handler, OperationOptions options) {
/** Track the number of lines processed. */
long lines = 0;
/** Text qualifier character. */
final char textQualifier = cfg.getTextQualifier();
/** Field delimiter. */
final char fieldSeparator = cfg.getFieldDelimiter();
/** Unique identifier field. */
final String uniqueIdField = cfg.getUniqueAttributeName();
/** Internal reader initialized in the constructor. */
BufferedReader rdr = null;
try {
rdr = cfg.newFileReader();
/** Fields names read from the header. */
List<String> fieldNames =
FlatFileConnector.readHeader(rdr, fieldSeparator, textQualifier, uniqueIdField);
String line;
while ((line = rdr.readLine()) != null) {
++lines;
if (line.trim().length() == 0) {
LOG.info(MSG_SKIPPING);
continue;
}
LOG.ok("Processing Data Line: {0}", line);
List<String> fieldValues = StringUtil.parseLine(line, fieldSeparator, textQualifier);
if (fieldValues == null) {
LOG.error("Error: {0}", line);
break;
} else {
ConnectorObjectBuilder bld = new ConnectorObjectBuilder();
for (int i = 0; i < fieldValues.size(); ++i) {
String name = fieldNames.get(i);
String value = fieldValues.get(i);
if (name.equals(uniqueIdField)) {
bld.setUid(value);
bld.setName(value);
} else {
bld.addAttribute(name, value);
}
}
// create the connector object..
ConnectorObject ret = bld.build();
if (!handler.handle(ret)) {
break;
}
}
}
} catch (IOException e) {
throw new ConnectorIOException(e);
} finally {
IOUtil.quietClose(rdr);
}
}
/**
* Read the header from the file and determine the attributes for the account object this resource
* supports.
*/
public Schema schema() {
// read the header to construct an ConnectionObjectInfo..
final SchemaBuilder bld = new SchemaBuilder(getClass());
BufferedReader rdr = null;
try {
// open the file for reading..
rdr = this.cfg.newFileReader();
// build the connector info object..
// read the header..
Set<AttributeInfo> attrInfos = new HashSet<AttributeInfo>();
List<String> fieldNames =
readHeader(
rdr,
this.cfg.getFieldDelimiter(),
this.cfg.getTextQualifier(),
this.cfg.getUniqueAttributeName());
for (String fieldName : fieldNames) {
AttributeInfoBuilder abld = new AttributeInfoBuilder();
abld.setName(fieldName);
abld.setCreateable(false);
abld.setUpdateable(false);
attrInfos.add(abld.build());
}
// set it to object class account..
bld.defineObjectClass(ObjectClass.ACCOUNT_NAME, attrInfos);
} catch (IOException e) {
throw new IllegalStateException(e);
} finally {
IOUtil.quietClose(rdr);
}
// return the new schema object..
return bld.build();
}