Package com.avaje.ebean.text.json

JSON formatting and parsing objects (See JsonContext).

See: Description

Interface Summary

Interface	Description
JsonContext	Converts objects to and from JSON format.
JsonElement	Marker interface for all the Raw JSON types.
JsonReadBeanVisitor<T>	Provides for some custom handling of json content as it is read.
JsonValueAdapter	Allows you to customise the Date and Timestamp formats.
JsonWriteBeanVisitor<T>	Allows for customising the JSON write processing.
JsonWriter	The JSON Writer made available to JsonWriteBeanVisitor's so that you can append your own JSON content into the output.

Class Summary

Class	Description
JsonElementArray	JSON Array element.
JsonElementBoolean	JSON boolean element.
JsonElementNull	JSON null element.
JsonElementNumber	JSON number element.
JsonElementObject	JSON Object element.
JsonElementString	JSON string element.
JsonReadOptions	Provides the ability to customise the reading of JSON content.
JsonWriteOptions	Provides options for customising the JSON write process.

Package com.avaje.ebean.text.json Description

JSON formatting and parsing objects (See JsonContext).

The goal is to provide JSON support taking into account various ORM issues such as partial objects (for fetching and updating), reference beans and bi-directional relationships.

Example:

  // find some customers ...
  
 List<Customer> list = Ebean.find(Customer.class)
     .select("id, name, status, shippingAddress")
     .fetch("billingAddress","line1, city")
     .fetch("billingAddress.country", "*")
     .fetch("contacts", "firstName,email")
     .order().desc("id")
     .findList();
 
 JsonContext json = Ebean.createJsonContext();
 
 JsonWriteOptions writeOptions = new JsonWriteOptions();
 writeOptions.setRootPathVisitor(new JsonWriteBeanVisitor<Customer>() {
 
     public void visit(Customer bean, JsonWriter ctx) {
         System.out.println("write visit customer: " + bean);
         ctx.appendKeyValue("dummyCust", "34");
         ctx.appendKeyValue("smallCustObject", "{\"a\":34,\"b\":\"asdasdasd\"}");
     }
 });
 
 writeOptions.setPathProperties("contacts", "firstName,id");
 writeOptions.setPathVisitor("contacts", new JsonWriteBeanVisitor<Contact>() {
 
     public void visit(Contact bean, JsonWriter ctx) {
         System.out.println("write additional custom json on customer: " + bean);
         ctx.appendKeyValue("dummy", "  3400" + bean.getId() + "");
         ctx.appendKeyValue("smallObject", "{\"contactA\":34,\"contactB\":\"banana\"}");
     }
 
 });
 
  // output as a JSON string with pretty formatting
 String s = json.toJsonString(list, true, writeOptions);