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package org.wordpress.android.datasets;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteStatement;
import android.support.annotation.NonNull;
import android.text.TextUtils;
import org.wordpress.android.util.DateTimeUtils;
import org.wordpress.android.util.SqlUtils;
import java.util.Date;
/**
* search suggestion table - populated by user's reader search history
*/
public class ReaderSearchTable {
public static final String COL_ID = "_id";
public static final String COL_QUERY = "query_string";
protected static void createTables(SQLiteDatabase db) {
db.execSQL("CREATE TABLE tbl_search_suggestions ("
+ " _id INTEGER PRIMARY KEY AUTOINCREMENT,"
+ " query_string TEXT NOT NULL COLLATE NOCASE,"
+ " date_used TEXT)");
db.execSQL("CREATE UNIQUE INDEX idx_search_suggestions_query ON tbl_search_suggestions(query_string)");
}
protected static void dropTables(SQLiteDatabase db) {
db.execSQL("DROP TABLE IF EXISTS tbl_search_suggestions");
}
/*
* adds the passed query string, updating the usage date
*/
public static void addOrUpdateQueryString(@NonNull String query) {
String date = DateTimeUtils.iso8601FromDate(new Date());
SQLiteStatement stmt = ReaderDatabase.getWritableDb().compileStatement(
"INSERT OR REPLACE INTO tbl_search_suggestions (query_string, date_used) VALUES (?1,?2)");
try {
stmt.bindString(1, query);
stmt.bindString(2, date);
stmt.execute();
} finally {
SqlUtils.closeStatement(stmt);
}
}
public static void deleteQueryString(@NonNull String query) {
String[]args = new String[]{query};
ReaderDatabase.getWritableDb().delete("tbl_search_suggestions", "query_string=?", args);
}
public static void deleteAllQueries() {
SqlUtils.deleteAllRowsInTable(ReaderDatabase.getWritableDb(), "tbl_search_suggestions");
}
/**
* Returns a cursor containing query strings previously typed by the user
* @param filter - filters the list using LIKE syntax (pass null for no filter)
* @param max - limit the list to this many items (pass zero for no limit)
*/
public static Cursor getQueryStringCursor(String filter, int max) {
String sql;
String[] args;
if (TextUtils.isEmpty(filter)) {
sql = "SELECT * FROM tbl_search_suggestions";
args = null;
} else {
sql = "SELECT * FROM tbl_search_suggestions WHERE query_string LIKE ?";
args = new String[]{filter + "%"};
}
sql += " ORDER BY date_used DESC";
if (max > 0) {
sql += " LIMIT " + max;
}
return ReaderDatabase.getReadableDb().rawQuery(sql, args);
}
}
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