org.finra.herd.core.helper

Class SpelExpressionHelper

java.lang.Object

org.finra.herd.core.helper.SpelExpressionHelper

@Component
public class SpelExpressionHelper
extends Object

Helper that contains operations around SpEL expression parse and evaluation.

Constructor Summary

Constructors

Constructor and Description
SpelExpressionHelper()

Method Summary

Modifier and Type	Method and Description
<T> T	evaluate(org.springframework.expression.Expression expression, Class<T> desiredResultType, Map<String,Object> variables) Evaluates the given expression using the given variables as context variables.
<T> T	evaluate(org.springframework.expression.Expression expression, Map<String,Object> variables) Evaluates the given expression using the given variables as context variables.
<T> T	evaluate(String expressionString, Class<T> desiredResultType, Map<String,Object> variables) Evaluates the given expression string using the given variables as context variables.
<T> T	evaluate(String expressionString, Map<String,Object> variables) Evaluates the given expression string using the given variables as context variables.
org.springframework.expression.Expression	parseExpression(String expressionString) Parses the given expression string into a SpEL expression.

Methods inherited from class java.lang.Object

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

Constructor Detail

SpelExpressionHelper

public SpelExpressionHelper()

Method Detail

evaluate

public <T> T evaluate(String expressionString,
                      Class<T> desiredResultType,
                      Map<String,Object> variables)

Evaluates the given expression string using the given variables as context variables.

Type Parameters:

T - The desired type

Parameters:

expressionString - Expression string to evaluate

desiredResultType - The desired type of the result. Spring will make best attempt at converting result to this type.

variables - The variables to put into context

Returns:

The result of the evaluation

evaluate

public <T> T evaluate(String expressionString,
                      Map<String,Object> variables)

Evaluates the given expression string using the given variables as context variables.

Type Parameters:

T - The desired type

Parameters:

expressionString - Expression string to evaluate

variables - The variables to put into context

Returns:

The result of the evaluation

parseExpression

public org.springframework.expression.Expression parseExpression(String expressionString)

Parses the given expression string into a SpEL expression.

Parameters:

expressionString - The expression string

Returns:

The parsed expression

evaluate

public <T> T evaluate(org.springframework.expression.Expression expression,
                      Class<T> desiredResultType,
                      Map<String,Object> variables)

Evaluates the given expression using the given variables as context variables.

Type Parameters:

T - The desired type

Parameters:

expression - The expression to evaluate

desiredResultType - The desired type of the result. Spring will make best attempt at converting result to this type.

variables - The variables to put into context

Returns:

The result of the evaluation

evaluate

public <T> T evaluate(org.springframework.expression.Expression expression,
                      Map<String,Object> variables)

Evaluates the given expression using the given variables as context variables.

Type Parameters:

T - The desired type

Parameters:

expression - The expression to evaluate

variables - The variables to put into context

Returns:

The result of the evaluation