Method longCoverpageQuery

android/src/org/coolreader/crengine/CRDB.java:1010–1023

( String sql )

	}
	
	private Long longCoverpageQuery( String sql )
	{
		SQLiteStatement stmt = null;
		try {
			stmt = mCoverpageDB.compileStatement(sql);
			return stmt.simpleQueryForLong();
		} catch ( Exception e ) {
			// not found or error
			return null;
		} finally {
			if (stmt != null)
				stmt.close();
		}
	}
	
	synchronized public void saveBookCoverpage( long bookId, byte[] data )
	{