Package com.avoka.component.json

Class JsonBuilder

java.lang.Object
com.avoka.component.json.JsonBuilder
@Deprecated public class JsonBuilder extends Object
Deprecated.
Provide a JSON (JavaScript Object Notation) string builder class which can be used to convert Java objects into JSON string for use in Dynamic Data Services.

PLEASE NOTE: this class is deprecated - it is recommended that you use the included Gson library instead

Dynamic Data Example

The Dynamic Data Groovy example below performs a database query and then appends the query row list to a JsonBuilder as an array. 
 // Provides form lookup form data service by calling a configurable Groovy script.
 //
 //   Script parameters include:
 //       form : com.avoka.fc.core.entity.Form
 //       request : jakarta.servlet.http.HttpServletRequest
 //       serviceDefinition : com.avoka.fc.core.entity.ServiceDefinition
 //       serviceParameters : Mapinvalid input: '<'String, String>
 //
 //   Script return:
 //       JSON string data value to be bound into the form data model
 //
 import groovy.sql.Sql
 import com.avoka.component.json.JsonBuilder

 def sql = Sql.newInstance("jdbc:oracle:thin:@localhost:1521:XE", "txmanager", "password", "oracle.jdbc.driver.OracleDriver")

 def rowList = sql.rows("select db_version as \"Version\", release_version as \"Release\" from db_version_update")

 def jsonBuilder = new JsonBuilder()

 def jsonResult = jsonBuilder.appendArray(rowList).toString()

 sql.close()

 return jsonResult
The JsonBuilder will convert this row data into a valid JSON array text, which will have the format: 
 [{"Version": 1025, "Release": "3.5.1"},{"Version": 1026, "Release": "3.5.1"},{"Version": 1027, "Release": "3.5.1"}]
This data can then be returned to a Composer form which can display the data as a grid.

References

Since:
3.5.1

  • Constructor Details

    • JsonBuilder

      public JsonBuilder()
      Deprecated.

  • Method Details

    • openArray

      public JsonBuilder openArray()
      Deprecated.
      Open a JSON array by appending the '[' character.
      Returns:
      this JsonBuilder instance

    • openObject

      public JsonBuilder openObject()
      Deprecated.
      Open a JSON object by appending the '{' character.
      Returns:
      this JsonBuilder instance
      Since:
      4.1.0

    • closeArray

      public JsonBuilder closeArray()
      Deprecated.
      Close a JSON array by appending the ']' character.
      Returns:
      this JsonBuilder instance

    • closeObject

      public JsonBuilder closeObject()
      Deprecated.
      Close a JSON object by appending the '}' character.
      Returns:
      this JsonBuilder instance
      Since:
      4.1.0

    • append

      public JsonBuilder append(String name, Object value)
      Deprecated.
      Append the given name and value to the JSON string builder.
      Parameters:
      name - the JSON name to append
      value - the JSON value to append
      Returns:
      this JsonBuilder instance

    • append

      public JsonBuilder append(Object object)
      Deprecated.
      Append the given object to the JSON string builder.
      Parameters:
      object - the Java object to append
      Returns:
      this JsonBuilder instance

    • appendArray

      public JsonBuilder appendArray(Collection collection)
      Deprecated.
      Append the given collection to the JSON string builder as JSON array.
      Parameters:
      collection - the collection object to append
      Returns:
      this JsonBuilder instance

    • appendResultSet

      public JsonBuilder appendResultSet(ResultSet resultSet)
      Deprecated.
      Append the given ResultSet to the JSON string builder as JSON array.
      Parameters:
      resultSet - the result set to append
      Returns:
      this JsonBuilder instance

    • appendResultSetRow

      public JsonBuilder appendResultSetRow(ResultSet resultSet)
      Deprecated.
      Append a single row from the given ResultSet to the JSON string builder as JSON array.
      Parameters:
      resultSet - the result set row to append
      Returns:
      this JsonBuilder instance

    • isEmpty

      public boolean isEmpty()
      Deprecated.
      Return true if the JSON string is empty.
      Returns:
      true if the JSON string is empty

    • toString

      public String toString()
      Deprecated.
      Return the JSON string value.
      Overrides:
      toString in class Object
      Returns:
      the JSON string value