Compile a sql update statement. - Android Database

Android examples for Database:SQL Update

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Description

Compile a sql update statement.

Demo Code

/*//from   ww w.  ja v  a  2  s .  c  o m
 * Copyright (C) 2012 - 2014 Arthur Pitman
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteStatement;

public class Main{
    /**
     * Compile an update statement.
     * @param db
     * @param tableName
     * @param columns
     * @return
     */
    public static SQLiteStatement compileUpdateStatement(SQLiteDatabase db,
            String tableName, String[] columns) {
        StringBuilder sql = new StringBuilder();
        sql.append("INSERT OR REPLACE INTO ");
        sql.append(tableName);
        sql.append(" (");

        for (int i = 0; i < columns.length; i++) {
            if (i > 0) {
                sql.append(", ");
            }
            sql.append(columns[i]);
        }
        sql.append(") VALUES (");
        for (int i = 0; i < columns.length; i++) {
            if (i == 0) {
                sql.append("?");
            } else {
                sql.append(", ?");
            }
        }
        sql.append(")");
        return db.compileStatement(sql.toString());
    }
}

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