net.sf.saffron.ext
Class ClassSchema

java.lang.Object
  |
  +--net.sf.saffron.ext.ClassSchema

All Implemented Interfaces:

SaffronSchema

public class ClassSchema

extends Object

implements SaffronSchema

A ClassSchema is a schema whose tables are reflections of the the public fields of a given class.

Field Summary

private Class	clazz
private boolean	ignoreCase

Constructor Summary

ClassSchema(Class clazz, boolean ignoreCase)

Method Summary

private Field	findField(String name)
SaffronTable	getTableForMember(String[] names) Retrieves a SaffronTable based upon a member access.
protected Expression	getTarget(Expression connectionExp) Given the expression which yields the current connection, returns an expression which yields the object which holds the schema data.
SaffronTypeFactory	getTypeFactory() Returns the type factory used to generate types for this schema.
void	registerRules(SaffronPlanner planner) Registers all of the rules supported by this schema.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

clazz

private final Class clazz

ignoreCase

private final boolean ignoreCase

Constructor Detail

ClassSchema

public ClassSchema(Class clazz,
                   boolean ignoreCase)

Method Detail

getTableForMember

public SaffronTable getTableForMember(String[] names)

Description copied from interface: SaffronSchema

Retrieves a SaffronTable based upon a member access.

For example, the Saffron expression salesSchema.emps would be resolved using a call to salesSchema.getTableForMember(new String[]{"emps"}).

Note that name.length is only greater than 1 for queries originating from JDBC.

Specified by:

getTableForMember in interface SaffronSchema

getTypeFactory

public SaffronTypeFactory getTypeFactory()

Description copied from interface: SaffronSchema

Returns the type factory used to generate types for this schema.

Specified by:

getTypeFactory in interface SaffronSchema

registerRules

public void registerRules(SaffronPlanner planner)
                   throws Exception

Description copied from interface: SaffronSchema

Registers all of the rules supported by this schema. Only called by SaffronPlanner.registerSchema(net.sf.saffron.core.SaffronSchema).

Specified by:

registerRules in interface SaffronSchema

Exception

getTarget

protected Expression getTarget(Expression connectionExp)

Given the expression which yields the current connection, returns an expression which yields the object which holds the schema data.

By default, returns the connection expression. So if the connection expression is Variable("connection"), it will return the same variable, and the planner will expect to be able to cast this value to the required class and find a field for each 'table' in the schema.

findField

private Field findField(String name)