Package com.axelor.data

Class DataScriptHelper

java.lang.Object

com.axelor.data.DataScriptHelper

public final class DataScriptHelper
extends Object

This DataScriptHelper class can be used to effectively use the GroovyShell to evaluate dynamic groovy expressions.

The DataScriptHelper maintains an internal LRU cache to reuse the parsed script. If the specified expiry time is elapsed without any access to the cached script, the cache is evicted to regain the memory.

Constructor Summary

Constructors

Constructor	Description
DataScriptHelper(int cacheSize, int expireTime, boolean indy)	Create a new DataScriptHelper with the given cacheSize and expireTime in minutes.

Method Summary

Modifier and Type	Method	Description
Object	eval(String expression, groovy.lang.Binding binding)	Evaluate the given expression.
Object	eval(String expression, Map<String,Object> variables)	Evaluate the given expression. An instance of Binding is created to deal with missing variables.

Methods inherited from class java.lang.Object

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

Constructor Detail

DataScriptHelper

public DataScriptHelper(int cacheSize,
                        int expireTime,
                        boolean indy)

Create a new DataScriptHelper with the given cacheSize and expireTime in minutes.

Parameters:

cacheSize - Size of the cache.

expireTime - The expire time in minutes after which the script is evicted from the cache if not accessed.

indy - Whether to use the invoke dynamic feature.

Method Detail

eval

public Object eval(String expression,
                   Map<String,Object> variables)

Evaluate the given expression.

An instance of Binding is created to deal with missing variables. In that case, null is returned and avoids MissingPropertyException.

Parameters:

expression - the groovy expression to evaluate

variables - the binding variables

Returns:

the result of the expression

eval

public Object eval(String expression,
                   groovy.lang.Binding binding)

Evaluate the given expression.

Parameters:

expression - the groovy expression to evaluate

binding - the binding variables

Returns:

the result of the expression