/**
* Test content for existence.
*
* @param key content identifier
* @param alive true inside used content and false for checking within content marked as unused.
* @return true if content found
* @throws BinaryStoreException
*/
private boolean contentExists(BinaryKey key, boolean alive) throws BinaryStoreException {
try {
String query = "SELECT payload from modeshape.binary where cid='" + key.toString() + "'";
query = alive ? query + " and usage=1;" : query + " and usage = 0;";
ResultSet rs = session.execute(query);
return rs.iterator().hasNext();
} catch (RuntimeException e) {
throw new BinaryStoreException(e);
}
}
@Override
public BinaryValue storeValue(InputStream stream) throws BinaryStoreException {
// store into temporary file system store and get SHA-1
BinaryValue temp = cache.storeValue(stream);
try {
// prepare new binary key based on SHA-1
BinaryKey key = new BinaryKey(temp.getKey().toString());
// check for duplicate content
if (this.contentExists(key, ALIVE)) {
return new StoredBinaryValue(this, key, temp.getSize());
}
// check unused content
if (this.contentExists(key, UNUSED)) {
session.execute("UPDATE modeshape.binary SET usage=1 WHERE cid='" + key + "';");
return new StoredBinaryValue(this, key, temp.getSize());
}
// store content
PreparedStatement query =
session.prepare(
"INSERT INTO modeshape.binary (cid, usage_time, payload, usage) VALUES ( ?,?,?,1 );");
BoundStatement statement = new BoundStatement(query);
session.execute(statement.bind(key.toString(), new Date(), buffer(stream)));
return new StoredBinaryValue(this, key, temp.getSize());
} catch (BinaryStoreException e) {
throw e;
} catch (IOException e) {
throw new BinaryStoreException(e);
} catch (RuntimeException e) {
throw new BinaryStoreException(e);
} finally {
// remove content from temp store
cache.markAsUnused(temp.getKey());
}
}
@Override
public InputStream getInputStream(BinaryKey key) throws BinaryStoreException {
try {
ResultSet rs =
session.execute(
"SELECT payload FROM modeshape.binary WHERE cid='"
+ key.toString()
+ "' and usage=1;");
Row row = rs.one();
if (row == null) {
throw new BinaryStoreException(JcrI18n.unableToFindBinaryValue.text(key, session));
}
ByteBuffer buffer = row.getBytes("payload");
return new BufferedInputStream(buffer);
} catch (BinaryStoreException e) {
throw e;
} catch (RuntimeException e) {
throw new BinaryStoreException(e);
}
}