Schematic

Automatically generate a ContentProvider backed by an SQLite database.

Usage

First create a class that contains the columns of a database table.

public interface ListColumns {

  @DataType(INTEGER) @PrimaryKey @AutoIncrement String _ID = "_id";

  @DataType(TEXT) @NotNull String TITLE = "title";
}

Then create a database that uses this column

@Database(version = NotesDatabase.VERSION)
public final class NotesDatabase {

  public static final int VERSION = 1;

  @Table(ListColumns.class) public static final String LISTS = "lists";
}

And finally define a ContentProvider

@ContentProvider(authority = NotesProvider.AUTHORITY, database = NotesDatabase.class)
public final class NotesProvider {

  public static final String AUTHORITY = "net.simonvt.schematic.sample.NotesProvider";

  @TableEndpoint(table = NotesDatabase.LISTS) public static class Lists {

    @ContentUri(
        path = "lists",
        type = "vnd.android.cursor.dir/list",
        defaultSort = ListColumns.TITLE + " ASC")
    public static final Uri LISTS = Uri.parse("content://" + AUTHORITY + "/lists");
  }

Table column annotations

@AutoIncrement
@DataType
@DefaultValue
@NotNull
@PrimaryKey
@References
@Unique

Defining an Uri

The @ContentUri annotation is used when the Uri does not change.

@ContentUri(
  path = "lists",
  type = "vnd.android.cursor.dir/list",
  defaultSort = ListColumns.TITLE + " ASC")
public static final Uri LISTS = Uri.parse("content://" + AUTHORITY + "/lists");

If the Uri is created based on some value, e.g. an id, @InexactContentUri is used.

@InexactContentUri(
  path = Path.LISTS + "/#",
  name = "LIST_ID",
  type = "vnd.android.cursor.item/list",
  whereColumn = ListColumns._ID,
  pathSegment = 1)
public static Uri withId(long id) {
  return Uri.parse("content://" + AUTHORITY + "/lists/" + id);
}

Including in your project

I recommend using the android-apt plugin. It doesn't include the compiler artifact in the final apk, and also sets the source paths so AS picks it up the generated classes.

apply plugin: 'com.android.application'
apply plugin: 'com.neenbedankt.android-apt'

buildscript {
  repositories {
    mavenCentral()
  }

  dependencies {
    classpath 'com.android.tools.build:gradle:{latest-version}'
    classpath 'com.neenbedankt.gradle.plugins:android-apt:{latest-version}'
  }
}

dependencies {
  apt 'net.simonvt.schematic:schematic-compiler:{latest-version}'
  compile 'net.simonvt.schematic:schematic:{latest-version}'
}

License

Copyright 2014 Simon Vig Therkildsen

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.