Identify correct and incorrect conditional expressions, BETWEEN expressions, IN expressions, LIKE expressions, and comparison expressions.

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Chapter 5. Client View of an Entity Identify correct and incorrect statements about the Application Assembler's responsibilities, including the use of deployment descriptor elements related to transactions and the identifica Given a list of responsibilities, identify whose which are the Container's with respect to transactions, including the handling of getRollbackOnly, setRollbackOnly, getUserTransacti EJB Transactional Attributes Chapter 11. Transactions Given a list of scenarios, identify which will result in an ejbRemove method not being called on a bean instance. Given a list of responsibilities related to session beans, identify those which are the responsibility of the session bean provider and those which are the responsibility of the EJB contai Given a list of methods for a stateful or stateless session bean class, define which of the following operations can be performed from each of those methods: SessionContext interface metho Chapter 4. Session Bean Life Cycle Identify correct and incorrect statements or examples about the client view of a session bean's local and remote component interfaces. Identify the interface and method for each of the following: retrieve the session bean's remote home interface, retrieve the session bean's local component interface, determine if the sessio Match the correct description about purpose and function to which session bean type they apply: stateless, stateful, or both. Chapter 14. Security Management Given a security-related deployment descriptor tag, identify correct and incorrect statements and code related to that tag. Given a list of responsibilities, identify which belong to the deployer, bean provider, application assembler, container provider, system administrator, or any combination. From a list of responsibilities, identify which belong to the application assembler, bean provider, deployer, container provider, or system administrator. Part I. Exam Objectives Preface Identify the interfaces and methods a JMS message-driven bean must implement. Identify the use and behavior of the MessageDrivenContext interface methods. SCBCD Study Guide Given a list of responsibilities related to exceptions, identify those which are the bean provider's, and those which are the responsibility of the container provider. Be prepared to recog Given a particular method condition, identify the following: whether an exception will be thrown, the type of exception thrown, the container's action, and the client's view. Identify correct and incorrect statements or examples about application exceptions and system exceptions in entity beans, session beans, and message-driven beans. Identify correct and incorrect statements or examples about the client's view of exceptions received from an enterprise bean invocation. Identify correct and incorrect statements or examples about an entity bean's primary key and object identity. Identify the use, syntax, and behavior of, the following entity bean home method types, for Container-Managed Persistence (CMP); finder methods, create methods, remove methods, and home me Chapter 8. Entity Beans Chapter 13. Enterprise Bean Environment Chapter 2. Client View of a Session Bean Match EJB roles with the corresponding description of the role's responsibilities, where the description may include deployment descriptor information. Given a list, identify which are requirements for an EJB-jar file. Identify correct and incorrect statements or examples about the client view of a entity bean's remote component interface (EJBObject). Identify correct and incorrect conditional expressions, BETWEEN expressions, IN expressions, LIKE expressions, and comparison expressions. Identify correct and incorrect statements or examples about the purpose and use of EJB QL. Chapter 9. EJB-QL Identify correct and incorrect statements or examples about EJB programming restrictions. Chapter 1. EJB Overview Identify EJB 2.0 container requirements. Identify correct and incorrect statements or examples about the client view of an entity bean's local component interface (EJBLocalObject).

Identify correct and incorrect conditional expressions, BETWEEN expressions, IN expressions, LIKE expressions, and comparison expressions.

Conditional expressions

Conditional expressions are composed of other conditional expressions, comparison operations, logical operations, path expressions that evaluate to boolean values, and boolean literals.

Arithmetic expressions can be used in comparison expressions. Arithmetic expressions are composed of other arithmetic expressions, arithmetic operations, path expressions that evaluate to numeric values, and numeric literals.

Arithmetic operations use Java numeric promotion.

Standard bracketing () for ordering expression evaluation is supported.

BETWEEN expressions

The syntax for the use of the comparison operator [NOT] BETWEEN in an conditional expression is as follows:

arithmetic_expression [NOT] BETWEEN arithmetic-expr AND arithmetic-expr

p.age BETWEEN 15 AND 19

					
is equivalent to
p.age >= 15 AND p.age <= 19

					

p.age NOT BETWEEN 15 AND 19

					
is equivalent to
p.age < 15 OR p.age > 19

					

IN expressions

The syntax for the use of the comparison operator [NOT] IN in a conditional expression is as follows:

single_valued_path_expression [NOT] IN (string-literal [, string-literal]* )

The single_valued_path_expression must have a String value.

o.country IN ('UK', 'US', 'BY')
					
is equivalent to
(o.country = 'UK') OR (o.country = 'US') OR (o.country = 'BY')
					

o.country NOT IN ('UK', 'US', 'BY')
					
is equivalent to
NOT ((o.country = 'UK') OR (o.country = 'US') OR (o.country = 'BY'))
					

LIKE expressions

The syntax for the use of the comparison operator [NOT] LIKE in a conditional expression is as follows:

single_valued_path_expression [NOT] LIKE pattern-value [ESCAPE escape-character]

The single_valued_path_expression must have a String value. The pattern-value is a string literal in which an underscore (_) stands for ANY SINGLE character, a percent (%) character stands for ANY SEQUENCE of characters (including the empty sequence), and all other characters stand for themselves. The optional escape-character is a single character string literal and is used to escape the special meaning of the underscore and percent characters in pattern-value.

address.phone LIKE '12%3'
					
TRUE for '123' '12993', FALSE for '1234'.

asentence.word LIKE 'l_se'
					
TRUE for 'lose', FALSE for 'loose'.

aword.underscored LIKE '\_%' ESCAPE '\'
					
TRUE for '_foo', FALSE for 'bar'.

address.phone NOT LIKE '12%3'
					
TRUE for '1234', FALSE for '123' and '12993'.

NOTE, input parameters CANNOT be used in LIKE expression.

NULL comparison expressions

The syntax for the use of the comparison operator IS NULL in a conditional expression is as follows:

single_valued_path_expression IS [NOT ] NULL

A null comparison expression tests whether or not the single valued path expression is a NULL value. Path expressions containing NULL values during evaluation return NULL values.

EMPTY collection comparison expressions

The syntax for the use of the comparison operator IS EMPTY in an empty_collection_comparison_expression is as follows:

collection_valued_path_expression IS [NOT] EMPTY

This expression tests whether or not the collection designated by the collection-valued path expression is empty (i.e, has no elements). The collection designated by the collection-valued path expression used in an empty collection comparison expression MUST NOT be used in the FROM clause for the declaration of an identification variable. An identification variable declared as a member of a collection IMPLICITLY designates the existence of a non-empty relationship; testing whether the same collection is empty is CONTRADICTORY.

Collection member expressions

The syntax for the use of the comparison operator MEMBER OF in an collection_member_expression is as follows:

{single_valued_navigation | identification_variable | input_parameter } [NOT] MEMBER [OF] collection_valued_path_expression

This expression tests whether the designated value is a member of the collection specified by the collection-valued path expression.

String Functions:

  • CONCAT(String, String) returns a String

  • SUBSTRING(String, start, length) returns a String

  • LOCATE(String, String [, start]) returns an int

  • LENGTH(String) returns an int

Arithmetic Functions:

  • ABS(number) returns a number (int, float, or double)

  • SQRT(double) returns a double

  • Visit http://java.boot.by  for the updates.

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Identify correct and incorrect conditional expressions, BETWEEN expressions, IN expressions, LIKE expressions, and comparison expressions.

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