LegacyCommCareDBCursorFactory.java

/**
 * 
 */
package org.commcare.android.db.legacy;

import java.util.Hashtable;

import org.commcare.android.crypt.CipherPool;
import org.commcare.android.database.EncryptedModel;
import org.commcare.android.util.SessionUnavailableException;

import android.database.Cursor;
import android.database.sqlite.SQLiteCursor;
import android.database.sqlite.SQLiteCursorDriver;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.database.sqlite.SQLiteQuery;

/**
 * @author ctsims
 *
 */
public class LegacyCommCareDBCursorFactory implements CursorFactory {
    
    private Hashtable<String, EncryptedModel> models;
    
    /**
     * Creates a cursor factory which is incapable of dealing with 
     * Encrypted data
     */
    public LegacyCommCareDBCursorFactory() {
        
    }
    
    public LegacyCommCareDBCursorFactory(Hashtable<String, EncryptedModel> models) {
        this.models = models;
    }

    /* (non-Javadoc)
     * @see android.database.sqlite.SQLiteDatabase.CursorFactory#newCursor(android.database.sqlite.SQLiteDatabase, android.database.sqlite.SQLiteCursorDriver, java.lang.String, android.database.sqlite.SQLiteQuery)
     */
    public Cursor newCursor(SQLiteDatabase db, SQLiteCursorDriver masterQuery, String editTable, SQLiteQuery query) throws SessionUnavailableException{
        if(models == null || !models.containsKey(editTable)) {
            return new SQLiteCursor(db, masterQuery, editTable, query);
        } else {
            EncryptedModel model = models.get(editTable);
            return new DecryptingCursor(db, masterQuery, editTable, query, model, getCipherPool());
        }
    } 
    
    protected CipherPool getCipherPool() throws SessionUnavailableException {
        return null;
    }
}