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oracle.toplink.expressions
Class ExpressionBuilder

java.lang.Object
ObjectExpression
oracle.toplink.expressions.ExpressionBuilder

public class ExpressionBuilder

extends ObjectExpression

Purpose: Allow for instances of expression to be created. Expressions are Java object-level representations of SQL "where" clauses. The expressions attempt to mirror Java code as closely as possible.

Example:

ExpressionBuilder employee = new ExpressionBuilder(); employee.get("firstName").equal("Bob").and(employee.get("lastName").equal("Smith")) >> equivalent Java code: (employee.getFirstName().equals("Bob")) && (employee.getLastName().equals("Smith")) >> equivalent SQL: (F_NAME = 'Bob') AND (L_NAME = 'Smith')

See Also:

Expression, Serialized Form

Constructor Summary

ExpressionBuilder()
PUBLIC: Create a new ExpressionBuilder.

ExpressionBuilder(java.lang.Class queryClass)
ADVANCED: Create a new ExpressionBuilder representing instances of the argument class.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionBuilder

public ExpressionBuilder()

PUBLIC: Create a new ExpressionBuilder.

ExpressionBuilder

public ExpressionBuilder(java.lang.Class queryClass)

ADVANCED: Create a new ExpressionBuilder representing instances of the argument class. This can be used for the purpose of parallel expressions. This is a type of query that searches on the relationship between to un-related objects.

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