Is there any API available to read drm files in ios devices?

Question

Hi,
I am ios developer and trying to read DRM files using my app.
I want to know is there any API available for the same.
Thanks in Advance.

Answer 1

Hi Prathap,
No, there is no Java API specific for RDF functionality available. However, Java client applications can use JDBC to access the RDF store. A partially relevant post is at How do you query Oracle RDF database using Java program? . The JDBC documentation will have detailed documentation on using JDBC.
Code snippets for one way of accessing SDO_RDF_MATCH through Java is below:
<..........>
sbStmt.append("select * from TABLE( ")
.append(" SDO_RDF_MATCH('(?S ?P ?O)',")
.append(" SDO_RDF_Models('")
.append( <model_name> )
.append("'),")
.append("null,null,null))")
.append(" where rownum <= ")
.append(iNumRows)
ResultSet rs = stmt.executeQuery(sbStmt.toString());
while (rs.next()) {
System.out.print("\n");
System.out.print(rs.getString("S"));
System.out.print(" (");
System.out.print(rs.getString("S$RDFVTYP"));
System.out.print(") ");
System.out.print(", ");
System.out.print(rs.getString("P"));
System.out.print(" (");
System.out.print(rs.getString("P$RDFVTYP"));
System.out.print(") ");
System.out.print(", ");
System.out.print(rs.getString("O"));
System.out.print(" (");
System.out.print(rs.getString("O$RDFVTYP"));
System.out.print(") ");
<............>
<...... handling CLOB values that are returned ....>
// read CLOB if applicable
Reader reader = null;
try {
CLOB clob = ((OracleResultSet) rs).getCLOB("O$RDFCLOB");
if (clob == null) {
System.out.print("not a long literal ");
else {
reader = clob.getCharacterStream();
char[] buffer = new char[1024];
// reading 1K at a time (just a demo)
int iLength = reader.read(buffer);
for (int i = 0; i < iLength; i++) {
System.out.print(buffer);
System.out.print(" ...");
finally {
if (reader != null) reader.close();
<..........>