X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=Addressbook%2Fsrc%2Forg%2Fmxchange%2Faddressbook%2Fdatabase%2Fbackend%2FDatabaseBackend.java;h=9a66e94f1f14b2006cf2fa7aac3e26c3fd6f503d;hb=3fc961ed434b91c90884c0d9914a7e93defc7e4a;hp=0d83acaf4a88d168e3fa25e038b2f84cd2b3dc1c;hpb=a9386126082a82d662e37cec79c3d449d89d25cf;p=jaddressbook-share-lib.git

diff --git a/Addressbook/src/org/mxchange/addressbook/database/backend/DatabaseBackend.java b/Addressbook/src/org/mxchange/addressbook/database/backend/DatabaseBackend.java
index 0d83aca..9a66e94 100644
--- a/Addressbook/src/org/mxchange/addressbook/database/backend/DatabaseBackend.java
+++ b/Addressbook/src/org/mxchange/addressbook/database/backend/DatabaseBackend.java
@@ -1,42 +1,91 @@
-/*
- * Copyright (C) 2015 Roland Haeder
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-package org.mxchange.addressbook.database.backend;
-
-import java.io.IOException;
-import org.mxchange.addressbook.FrameworkInterface;
-import org.mxchange.addressbook.database.storage.Storeable;
-
-/**
- * A generic interface for database frontends
- * 
- * @author Roland Haeder
- */
-public interface DatabaseBackend extends FrameworkInterface {
-
-    /**
-     * Rewinds backend
-     */
-    public void rewind ();
-
-    /**
-     * Stores an object in the database.
-     * 
-     * @param object Object to store in database
-     * @throws java.io.IOException From inner class
-     */
-    public void store (final Storeable object) throws IOException;
-}
+/*
+ * Copyright (C) 2015 Roland Haeder
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.mxchange.addressbook.database.backend;
+
+import java.io.IOException;
+import java.sql.SQLException;
+import java.util.Iterator;
+import org.mxchange.addressbook.FrameworkInterface;
+import org.mxchange.addressbook.contact.Contact;
+import org.mxchange.addressbook.database.storage.Storeable;
+import org.mxchange.addressbook.exceptions.BadTokenException;
+
+/**
+ * A generic interface for database frontends
+ *
+ * @author Roland Haeder
+ */
+public interface DatabaseBackend extends FrameworkInterface {
+
+	/**
+	 * Tries a connection to the database
+	 * 
+	 * @throws java.sql.SQLException If the connection attempt fails
+	 */
+	public void connectToDatabase () throws SQLException;
+
+	/**
+	 * Shuts down this backend
+	 */
+	public void doShutdown ();
+
+	/**
+	 * Some "getter" for total table row count
+	 * 
+	 * @return Total row count
+	 */
+	public int getTotalCount ();
+
+	/**
+	 * Checks whether at least one row is found with given boolean value.
+	 *
+	 * @param columnName Column to check for boolean value
+	 * @param bool Boolean value to check
+	 * @return Whether boolean value is found and returns at least one row
+	 */
+	public boolean isRowFound (final String columnName, final boolean bool);
+
+	/**
+	 * Rewinds backend
+	 */
+	public void rewind ();
+
+	/**
+	 * Get length of underlaying file
+	 *
+	 * @return Length of underlaying file
+	 */
+	public long length ();
+
+	/**
+	 * Stores an object in the database.
+	 *
+	 * @param object Object to store in database
+	 * @throws java.io.IOException From inner class
+	 */
+	public void store (final Storeable object) throws IOException;
+
+	/**
+	 * Gets an iterator for contacts
+	 *
+	 * @return Iterator for contacts
+	 * @throws org.mxchange.addressbook.exceptions.BadTokenException If the CSV token is badly formulated
+	 * @deprecated The method is to much "contact" specific
+	 */
+	@Deprecated
+	public Iterator<Contact> contactIterator () throws BadTokenException;
+}