This chapter describes the various components that you must configure in order to use a relational direct-to-field mapping.
This chapter includes the following section:
For information on how to configure TopLink mappings options common to two or more mapping types, see Chapter 121, "Configuring a Mapping".
For information on how to create TopLink mappings, see Chapter 120, "Creating a Mapping".
Table 29-1 lists the configurable options for a relational direct-to-field mapping.
Table 29-1 lists the configurable options for a relational direct-to-field mapping.
Table 29-1 Configurable Options for Relational Direct-to-Field Mapping
Option to Configure | Oracle JDeveloper |
TopLink Workbench |
Java |
---|---|---|---|
Database field (see Section 28.3, "Configuring a Database Field") |
|||
Method or direct field access (see Section 121.6, "Configuring Method or Direct Field Accessing at the Mapping Level") |
|||
Default null value (see Section 121.5, "Configuring a Default Null Value at the Mapping Level") |
|||
Read-only (see Section 121.2, "Configuring Read-Only Mappings") |
|||
Mapping comments (see Section 121.8, "Configuring Mapping Comments") |
|||
Serialized object converter (see Section 121.9, "Configuring a Serialized Object Converter") |
|||
Type conversion converter (see Section 121.10, "Configuring a Type Conversion Converter") |
|||
Object type converter (see Section 121.11, "Configuring an Object Type Converter") |
Example 29-1 shows how to create a direct-to-field mapping and add it to a descriptor using Java code.
Example 29-1 Direct-to-Field Mapping
public void customize(ClassDescriptor descriptor) { DirectToFieldMapping mapping = new DirectToFieldMapping(); // configure mapping ... // add mapping to descriptor descriptor.addMapping(mapping); }
For more information, see the following: