/**
* Search the Database Server using the provided search request.
*
* @param request The search request.
* @param handler A search result handler which can be used to asynchronously process the search
* result entries and references as they are received, may be null.
* @return The result of the operation.
* @throws ErrorResultException If the result code indicates that the request failed for some
* reason.
* @throws SQLException If the SQL query has an invalid format.
* @throws NullPointerException If {@code request} was {@code null}, or if a corresponding mapping
* value could not be found in the mapping component.
*/
@Override
public Result search(SearchRequest request, SearchResultHandler handler)
throws ErrorResultException {
Result r;
try {
// Split up the DN the of the request.
final DN DN = request.getName();
final int DNSize = DN.size();
final String baseDN = DN.parent(DNSize - 2).toString();
RDN OU = null;
RDN rDN = null;
String OUName = "";
String rDNAttributeName = "";
String rDNAttributeValue = "";
if (DNSize > 3) {
OU = DN.parent(1).rdn();
OUName = OU.getFirstAVA().getAttributeValue().toString();
rDN = DN.parent(0).rdn();
rDNAttributeName = rDN.getFirstAVA().getAttributeType().getNameOrOID();
rDNAttributeValue = rDN.getFirstAVA().getAttributeValue().toString();
} else if (DNSize > 2) {
OU = DN.parent(0).rdn();
OUName = OU.getFirstAVA().getAttributeValue().toString();
}
List<String> returnAttributeNames = request.getAttributes();
final List<String> removeAttributesList = new ArrayList<String>();
// Get all column names to be returned to return full records.
if (returnAttributeNames == null) {
if (OU != null) {
returnAttributeNames = jdbcm.getOrganizationalUnitAttributes(baseDN, OUName);
if (returnAttributeNames == null)
throw new NullPointerException(
"JDBC Error: Could not find any matching attributes in OU: '" + OUName + "'.");
final String tableName = jdbcm.getTableNameFromMapping(baseDN, OUName);
for (Iterator<String> iterAttributes = returnAttributeNames.iterator();
iterAttributes.hasNext(); ) {
String returnAttributeName = iterAttributes.next();
final String returnColumnName =
jdbcm.getColumnNameFromMapping(tableName, baseDN, OUName, returnAttributeName);
if (returnColumnName == null) removeAttributesList.add(returnAttributeName);
}
returnAttributeNames.removeAll(removeAttributesList);
} else {
final List<String> OUList = jdbcm.getOrganizationalUnits(baseDN);
if (OUList == null)
throw new NullPointerException(
"JDBC Error: Could not find any matching organizational units in DN: '"
+ baseDN
+ "'.");
for (Iterator<String> iterOU = OUList.iterator(); iterOU.hasNext(); ) {
OUName = iterOU.next();
final String tableName = jdbcm.getTableNameFromMapping(baseDN, OUName);
returnAttributeNames = jdbcm.getOrganizationalUnitAttributes(baseDN, OUName);
for (Iterator<String> iterAttributes = returnAttributeNames.iterator();
iterAttributes.hasNext(); ) {
String returnAttributeName = iterAttributes.next();
final String returnColumnName =
jdbcm.getColumnNameFromMapping(tableName, baseDN, OUName, returnAttributeName);
if (returnColumnName == null) removeAttributesList.add(returnAttributeName);
}
returnAttributeNames.removeAll(removeAttributesList);
}
}
}
// Convert the search filter.
final Filter searchFilter = request.getFilter();
final String convertedFilterString = convertSearchFilter(searchFilter, baseDN, OUName);
if (convertedFilterString.startsWith("Err:")) {
String[] errorStringSplitter = convertedFilterString.split("Err:");
throw new NullPointerException(errorStringSplitter[1]);
}
final List<String> returnColumnNames = new ArrayList<String>();
// Search mapping for the corresponding column name for each return attribute.
for (Iterator<String> iter = returnAttributeNames.iterator(); iter.hasNext(); ) {
if (OU == null) {
final String returnAttributeName = iter.next();
final List<String> OUList = jdbcm.getOrganizationalUnits(baseDN);
if (OUList == null)
throw new NullPointerException(
"JDBC Error: Could not find any matching organizational units in DN: '"
+ baseDN
+ "'.");
for (Iterator<String> iterOU = OUList.iterator(); iterOU.hasNext(); ) {
OUName = iterOU.next();
final String tableName = jdbcm.getTableNameFromMapping(baseDN, OUName);
final String returnColumnName =
jdbcm.getColumnNameFromMapping(tableName, baseDN, OUName, returnAttributeName);
if (returnColumnName == null) continue;
else returnColumnNames.add(returnColumnName);
break;
}
} else {
final String returnAttributeName = iter.next();
final String tableName = jdbcm.getTableNameFromMapping(baseDN, OUName);
if (tableName == null)
throw new NullPointerException(
"JDBC Error: Could not find matching table name for OU: '"
+ OUName
+ "' in DN: '"
+ baseDN
+ "'. Please check if mapping was succesful.");
final String returnColumnName =
jdbcm.getColumnNameFromMapping(tableName, baseDN, OUName, returnAttributeName);
if (returnColumnName == null)
throw new NullPointerException(
"JDBC Error: Could not find matching column name for attribute: '"
+ returnAttributeName
+ "'. Please check if mapping was succesful.");
returnColumnNames.add(returnColumnName);
}
}
String selectString = "";
String fromString = "";
String whereString = convertedFilterString;
if (returnAttributeNames.isEmpty()) selectString = "*";
// Build the SQL SELECT string.
if (OU == null) {
final List<String> OUList = jdbcm.getOrganizationalUnits(baseDN);
if (OUList == null)
throw new NullPointerException(
"JDBC Error: Could not find any matching organizational units in DN: '"
+ baseDN
+ "'.");
for (int i = 0; i < OUList.size(); i++) {
final String currentOU = OUList.get(i);
final String currentTable = jdbcm.getTableNameFromMapping(baseDN, currentOU);
if (currentTable == null) continue;
final List<String> currentTableColumnNames = jdbcm.getTableColumns(currentTable);
if (!fromString.isEmpty()) fromString = fromString.concat(",");
fromString = fromString.concat(currentTable);
for (int j = 0; j < returnColumnNames.size(); j++) {
final String returnColumnName = returnColumnNames.get(j);
if (currentTableColumnNames.contains(returnColumnName)) {
if (!selectString.isEmpty()) selectString = selectString.concat(",");
selectString = selectString.concat(currentTable + "." + returnColumnName);
}
}
}
} else {
final String selectTable = jdbcm.getTableNameFromMapping(baseDN, OUName);
if (selectTable == null)
throw new NullPointerException(
"JDBC Error: Could not find matching table name for OU: '"
+ OUName
+ "' in DN: '"
+ baseDN
+ "'. Please check if mapping was succesful.");
fromString = fromString.concat(selectTable);
for (int j = 0; j < returnColumnNames.size(); j++) {
final String returnColumnName = returnColumnNames.get(j);
if (returnColumnName == null) continue;
if (!selectString.isEmpty()) selectString = selectString.concat(",");
selectString = selectString.concat(returnColumnName);
}
if (rDN != null) {
final String columnName =
jdbcm.getColumnNameFromMapping(selectTable, baseDN, OUName, rDNAttributeName);
if (columnName == null)
throw new NullPointerException(
"JDBC Error: Could not find matching column name for attribute: '"
+ rDNAttributeName
+ "'. Please check if mapping was succesful.");
whereString = columnName + "='" + rDNAttributeValue + "'";
}
}
// Build the SQL query.
final Statement st = connection.createStatement();
String sql = "SELECT " + selectString + " FROM " + fromString;
if (!whereString.isEmpty()) sql = sql.concat(" WHERE " + whereString);
ResultSet rs = st.executeQuery(sql);
ResultSetMetaData rsmd = rs.getMetaData();
// Fill the entries result for this query.
searchEntries.clear();
while (rs.next()) {
Entry e = new LinkedHashMapEntry();
for (int i = 1; i <= rsmd.getColumnCount(); i++) {
e.addAttribute(rsmd.getTableName(i) + "_" + rsmd.getColumnName(i), rs.getObject(i));
}
searchEntries.add(e);
}
r = Responses.newResult(ResultCode.SUCCESS);
} catch (SQLException e) {
System.out.println(e.toString());
r = Responses.newResult(ResultCode.OPERATIONS_ERROR);
r.setCause(e);
} catch (NullPointerException e) {
System.out.println(e.toString());
r = Responses.newCompareResult(ResultCode.OPERATIONS_ERROR);
r.setCause(e);
}
return r;
}
/**
* Converts the LDAP filter to an SQL filter.
*
* @param filter The filter of the search request.
* @param baseDN The top domain name.
* @param OUName The name of the organizational unit.
* @return The converted SQL filter.
* @throws NullPointerException If the result code indicates that the request failed for some
* reason.
* @throws SQLException If the SQL query has an invalid format.
* @throws NullPointerException If {@code filter}, {@code baseDN} or {@code OUName} was {@code
* null}, or if a corresponding mapping value could not be found in the mapping component.
*/
private String convertSearchFilter(final Filter filter, final String baseDN, String OUName) {
try {
String filterString = filter.toString();
String convertedFilterString = "";
if (filterString.isEmpty() || filterString.contains("objectClass=*")) return "";
int stringIndex = 0;
int subStringCount = 0;
// Set the amount of subfilters if operators are present.
while (filterString.charAt(stringIndex) == '(') {
if (filterString.charAt(stringIndex + 2) == '(') {
subStringCount++;
}
stringIndex += 2;
}
if (subStringCount == 0) {
// Replace escape characters.
String subString = filterString.substring(1, filterString.length() - 1);
subString = subString.replace("\\02a", "*");
subString = subString.replace("\\028", "(");
subString = subString.replace("\\029", ")");
String[] subStringSplitter;
if (subString.contains("<=")) subStringSplitter = subString.split("<=");
else if (subString.contains(">=")) subStringSplitter = subString.split(">=");
else subStringSplitter = subString.split("=");
final String filterAttributeName = subStringSplitter[0];
String filterColumnName = null;
;
Object columnDataType = null;
// Search mapping for the corresponding table and column names.
if (OUName.isEmpty()) {
final List<String> OUList = jdbcm.getOrganizationalUnits(baseDN);
for (Iterator<String> iter = OUList.iterator(); iter.hasNext(); ) {
OUName = iter.next();
final String tableName = jdbcm.getTableNameFromMapping(baseDN, OUName);
if (tableName == null) continue;
filterColumnName =
jdbcm.getColumnNameFromMapping(tableName, baseDN, OUName, filterAttributeName);
if (filterColumnName == null) continue;
else columnDataType = jdbcm.getTableColumnDataType(tableName, filterColumnName);
break;
}
if (filterColumnName == null)
throw new NullPointerException(
"JDBC Error: Could not find matching column name for attribute: '"
+ filterAttributeName
+ "'. Please check if mapping was succesful.");
} else {
final String tableName = jdbcm.getTableNameFromMapping(baseDN, OUName);
if (tableName == null)
throw new NullPointerException(
"JDBC Error: Could not find matching table name for OU: '"
+ OUName
+ "' in DN: '"
+ baseDN
+ "'. Please check if mapping was succesful.");
filterColumnName =
jdbcm.getColumnNameFromMapping(tableName, baseDN, OUName, filterAttributeName);
if (filterColumnName == null)
throw new NullPointerException(
"JDBC Error: Could not find matching column name for attribute: '"
+ filterAttributeName
+ "'. Please check if mapping was succesful.");
columnDataType = jdbcm.getTableColumnDataType(tableName, filterColumnName);
}
// Set values to right format.
if (columnDataType != Integer.class) {
String filterAttributeValue = subStringSplitter[1];
String filterColumnValue = "'" + filterAttributeValue + "'";
filterAttributeValue = filterAttributeValue.replace("*", "\\*");
filterAttributeValue = filterAttributeValue.replace("(", "\\(");
filterAttributeValue = filterAttributeValue.replace(")", "\\)");
if (filterColumnValue.length() > 3 && filterColumnValue.contains("*")) {
filterColumnValue = filterColumnValue.replace("*", "%");
subString = subString.replace("=", " like ");
}
subString = subString.replaceFirst(filterAttributeValue, filterColumnValue);
}
subString = subString.replaceFirst(filterAttributeName, filterColumnName);
convertedFilterString = convertedFilterString.concat(subString);
} else {
int subStringStartIndex = 2 * subStringCount;
int subStringEndIndex = 0;
final String[] subStrings = new String[subStringCount];
final char[] operationChars = new char[subStringCount];
// Separate operation characters and subfilters.
while (subStringStartIndex > 0) {
final char operationChar = filterString.charAt(subStringStartIndex - 1);
subStringEndIndex = filterString.indexOf("))") + 1;
String subString = filterString.substring(subStringStartIndex, subStringEndIndex);
subString = subString.replace("()", "");
operationChars[subStringCount - subStringStartIndex / 2] = operationChar;
subStrings[subStringCount - subStringStartIndex / 2] = subString;
final String replaceString =
filterString.substring(subStringStartIndex - 1, subStringEndIndex);
filterString = filterString.replace(replaceString, "");
subStringStartIndex -= 2;
}
// Handle the not operator.
for (int i = 0; i < subStringCount; i++) {
final char operationChar = operationChars[i];
if (operationChar == '!') {
String subString = subStrings[i];
if (subString.isEmpty()) {
subString = subStrings[i - 1];
subString = subString.replace(">=", ">");
subString = subString.replace("<=", "<");
subString = subString.replace("=", "!=");
subString = subString.replace(">", ">=");
subString = subString.replace("<", "<=");
subStrings[i - 1] = subString;
} else {
subString = subString.replace(">=", ">");
subString = subString.replace("<=", "<");
subString = subString.replace("=", "!=");
subString = subString.replace(">", ">=");
subString = subString.replace("<", "<=");
subStrings[i] = subString;
}
}
}
boolean multipleSubStrings = false;
if (subStringCount > 1) multipleSubStrings = true;
// Convert each subfilter with corresponding operator.
for (int i = 0; i < subStringCount; i++) {
final char operationChar = operationChars[i];
String operationString = "";
if (operationChar == '&') {
operationString = " AND ";
} else if (operationChar == '|') {
operationString = " OR ";
}
String subString = subStrings[i];
if (subString.isEmpty()) continue;
subString = subString.substring(1, subString.length() - 1);
String[] subStringSplitter = subString.split("\\)\\(");
for (int j = 0; j < subStringSplitter.length; j++) {
String subStringFilter = subStringSplitter[j];
final String[] subStringFilterSplitter;
subStringFilter = subStringFilter.replace("\\02a", "*");
subStringFilter = subStringFilter.replace("\\028", "(");
subStringFilter = subStringFilter.replace("\\029", ")");
if (subStringFilter.contains("!="))
subStringFilterSplitter = subStringFilter.split("!=");
else if (subStringFilter.contains("<="))
subStringFilterSplitter = subStringFilter.split("<=");
else if (subStringFilter.contains(">="))
subStringFilterSplitter = subStringFilter.split(">=");
else subStringFilterSplitter = subStringFilter.split("=");
final String filterAttributeName = subStringFilterSplitter[0];
String filterColumnName = null;
;
Object columnDataType = null;
// Search mapping for the corresponding column name for each filter attribute.
if (OUName.isEmpty()) {
final List<String> OUList = jdbcm.getOrganizationalUnits(baseDN);
for (Iterator<String> iter = OUList.iterator(); iter.hasNext(); ) {
OUName = iter.next();
final String tableName = jdbcm.getTableNameFromMapping(baseDN, OUName);
if (tableName == null) continue;
filterColumnName =
jdbcm.getColumnNameFromMapping(tableName, baseDN, OUName, filterAttributeName);
if (filterColumnName == null) continue;
else columnDataType = jdbcm.getTableColumnDataType(tableName, filterColumnName);
break;
}
if (filterColumnName == null)
throw new NullPointerException(
"JDBC Error: Could not find matching column name for attribute: '"
+ filterAttributeName
+ "'. Please check if mapping was succesful.");
} else {
final String tableName = jdbcm.getTableNameFromMapping(baseDN, OUName);
if (tableName == null)
throw new NullPointerException(
"JDBC Error: Could not find matching table name for OU: '"
+ OUName
+ "' in DN: '"
+ baseDN
+ "'. Please check if mapping was succesful.");
filterColumnName =
jdbcm.getColumnNameFromMapping(tableName, baseDN, OUName, filterAttributeName);
if (filterColumnName == null)
throw new NullPointerException(
"JDBC Error: Could not find matching column name for attribute: '"
+ filterAttributeName
+ "'. Please check if mapping was succesful.");
columnDataType = jdbcm.getTableColumnDataType(tableName, filterColumnName);
}
// Handle the like operator.
if (columnDataType != Integer.class) {
String filterAttributeValue = subStringFilterSplitter[1];
String filterColumnValue = "'" + filterAttributeValue + "'";
filterAttributeValue = filterAttributeValue.replace("*", "\\*");
filterAttributeValue = filterAttributeValue.replace("(", "\\(");
filterAttributeValue = filterAttributeValue.replace(")", "\\)");
if (filterColumnValue.length() > 3 && filterColumnValue.contains("*")) {
filterColumnValue = filterColumnValue.replace("*", "%");
if (subStringFilter.contains("!="))
subStringFilter = subStringFilter.replace("!=", " not like ");
else subStringFilter = subStringFilter.replace("=", " like ");
}
subStringFilter =
subStringFilter.replaceFirst(filterAttributeValue, filterColumnValue);
}
subStringFilter = subStringFilter.replaceFirst(filterAttributeName, filterColumnName);
if (j != 0 || i != 0)
convertedFilterString = convertedFilterString.concat(operationString);
convertedFilterString = convertedFilterString.concat(subStringFilter);
}
if (multipleSubStrings && i < subStringCount - 1)
convertedFilterString = "(" + convertedFilterString + ")";
}
}
return convertedFilterString;
} catch (NullPointerException e) {
return "Err:" + e.getMessage();
}
}