Add recaptcha

app/src/main/java/com/hippo/database/MSQLiteBuilder.java

@@ -0,0 +1,130 @@
+/*
+ * Copyright 2017 Hippo Seven
+ *
+ * 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.
+ */
+
+package com.hippo.database;
+
+/*
+ * Created by Hippo on 2017/9/3.
+ */
+
+import android.content.Context;
+import android.database.sqlite.SQLiteOpenHelper;
+import android.util.SparseArray;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class MSQLiteBuilder {
+
+  public static final String COLUMN_ID = "_id";
+
+  private static final Map<Class, String> JAVA_TYPE_TO_SQLITE_TYPE = new HashMap<>();
+
+  static {
+    JAVA_TYPE_TO_SQLITE_TYPE.put(boolean.class, "INTEGER NOT NULL DEFAULT 0");
+    JAVA_TYPE_TO_SQLITE_TYPE.put(byte.class, "INTEGER NOT NULL DEFAULT 0");
+    JAVA_TYPE_TO_SQLITE_TYPE.put(short.class, "INTEGER NOT NULL DEFAULT 0");
+    JAVA_TYPE_TO_SQLITE_TYPE.put(int.class, "INTEGER NOT NULL DEFAULT 0");
+    JAVA_TYPE_TO_SQLITE_TYPE.put(long.class, "INTEGER NOT NULL DEFAULT 0");
+    JAVA_TYPE_TO_SQLITE_TYPE.put(float.class, "REAL NOT NULL DEFAULT 0");
+    JAVA_TYPE_TO_SQLITE_TYPE.put(double.class, "REAL NOT NULL DEFAULT 0");
+    JAVA_TYPE_TO_SQLITE_TYPE.put(String.class, "TEXT");
+  }
+
+  private static String javaTypeToSQLiteType(Class clazz) {
+    String type = JAVA_TYPE_TO_SQLITE_TYPE.get(clazz);
+    if (type == null) {
+      throw new IllegalStateException("Unknown type: " + clazz);
+    }
+    return type;
+  }
+
+  private int version = 0;
+  private List<String> statements;
+  private SparseArray<List<String>> statementsMap = new SparseArray<>();
+
+  /**
+   * Bump database version.
+   */
+  public MSQLiteBuilder version(int version) {
+    if (version <= this.version) {
+      throw new IllegalStateException("New version must be bigger than current version. "
+          + "current version: " + this.version + ", new version: " + version + ".");
+    }
+    this.version = version;
+    this.statements = new ArrayList<>();
+    this.statementsMap.put(version, this.statements);
+    return this;
+  }
+
+  /**
+   * Creates a table with int {@link #COLUMN_ID} primary key.
+   */
+  public MSQLiteBuilder createTable(String table) {
+    return createTable(table, COLUMN_ID, int.class);
+  }
+
+  /**
+   * Creates a table.
+   */
+  public MSQLiteBuilder createTable(String table, String column, Class clazz) {
+    return statement("CREATE TABLE " + table + " (" + column + " " + javaTypeToSQLiteType(clazz) + " PRIMARY KEY);");
+  }
+
+  /**
+   * Drops a table.
+   */
+  public MSQLiteBuilder dropTable(String table) {
+    return statement("DROP TABLE " + table + ";");
+  }
+
+  /**
+   * Inserts a column to the table.
+   */
+  public MSQLiteBuilder insertColumn(String table, String column, Class clazz) {
+    return statement("ALTER TABLE " + table + " ADD COLUMN " + column + " " + javaTypeToSQLiteType(clazz) + ";");
+  }
+
+  /**
+   * Add a statement.
+   */
+  public MSQLiteBuilder statement(String statement) {
+    if (version == 0 || statements == null) {
+      throw new IllegalStateException("Call version() first!");
+    }
+    statements.add(statement);
+    return this;
+  }
+
+  /**
+   * Build a SQLiteOpenHelper from it.
+   */
+  public SQLiteOpenHelper build(Context context, String name, int version) {
+    return new MSQLiteOpenHelper(context, name, version, this);
+  }
+
+  List<String> getStatements(int oldVersion, int newVersion) {
+    List<String> result = new ArrayList<>();
+    for (int i = oldVersion + 1; i <= newVersion; ++i) {
+      List<String> list = statementsMap.get(i);
+      if (list != null) {
+        result.addAll(list);
+      }
+    }
+    return result;
+  }
+}