本文整理汇总了Java中javax.el.ELProcessor.eval方法的典型用法代码示例。如果您正苦于以下问题:Java ELProcessor.eval方法的具体用法?Java ELProcessor.eval怎么用?Java ELProcessor.eval使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类javax.el.ELProcessor
的用法示例。
在下文中一共展示了ELProcessor.eval方法的14个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testEnvironmentResolver
import javax.el.ELProcessor; //导入方法依赖的package包/类
@Test
public void testEnvironmentResolver(){
EnvironmentImpl environment = new EnvironmentImpl();
environment.setAttribute( "testAtr1", true );
environment.setAttribute( "testAtr2", "33" );
environment.setAttribute( "testAtr3", null );
ELProcessor processor = ElUtil.initNewELProcessor( environment, null );
boolean result = (boolean)processor.eval( "empty testAtr3 && testAtr1" );
// this again fails: "ELResolver cannot handle a null base Object with identifier 'unknownAtr'"
//boolean result = (boolean)processor.eval( "empty testAtr3 && testAtr1 && empty unknownAtr" );
Assert.assertTrue( result );
}
示例2: testEnvironmentResolverDate
import javax.el.ELProcessor; //导入方法依赖的package包/类
@Test
public void testEnvironmentResolverDate(){
Date start = new Date();
EnvironmentImpl environment = new EnvironmentImpl();
environment.setAttribute( "currentMillis", System.currentTimeMillis() );
try{
Thread.sleep( 30 );
}
catch( InterruptedException e ){
}
ELProcessor processor = ElUtil.initNewELProcessor( environment, null );
boolean result = (boolean)processor.eval( "NOW.time > currentMillis" );
Assert.assertTrue( result );
Date now = (Date)processor.eval( "NOW" );
Assert.assertTrue( now.after( start ) );
}
示例3: evaluate
import javax.el.ELProcessor; //导入方法依赖的package包/类
@Override
public boolean evaluate( GraphInstance instance ){
boolean result = false;
if( StringUtils.isNotBlank( condition ) ){
ELProcessor processor = ElUtil.initNewELProcessor( instance.getEnvironment(), instance.getExternalId() );
result = (boolean)processor.eval( condition );
}
return result;
}
示例4: execute
import javax.el.ELProcessor; //导入方法依赖的package包/类
@Override
public void execute( GraphEngine engine, Token token ){
GraphInstance instance = token.getInstance();
Environment environment = instance.getEnvironment();
if( !environment.containsAttribute( attribute ) ){
if( isRequired ){
// Throw exception
throw new WorkflowException( "Missing required attribute '" + attribute + "'" );
}
else{
// Use default value
if( defaultValue instanceof String && ElUtil.hasBrackets( (String)defaultValue ) ){
ELProcessor processor = ElUtil.initNewELProcessor( environment, instance.getExternalId() );
Object expressionResult = processor.eval( ElUtil.removeBrackets( (String)defaultValue ) );
environment.setAttribute( attribute, expressionResult );
}
else{
environment.setAttribute( attribute, defaultValue );
}
}
}
// Validate type of value
Object value = environment.getAttribute( attribute );
if( value != null && !type.isAssignableFrom( value.getClass() ) ){
throw new WorkflowException( "The value of attribute '" + attribute
+ "' is of type " + value.getClass().getCanonicalName()
+ " whis is not assignable to the expected type " + type.getCanonicalName() );
}
engine.complete( token, null );
}
示例5: execute
import javax.el.ELProcessor; //导入方法依赖的package包/类
@Override
public void execute( GraphEngine engine, Token token ){
GraphInstance instance = token.getInstance();
Environment environment = instance.getEnvironment();
if( value instanceof String && ElUtil.hasBrackets( (String)value ) ){
ELProcessor processor = ElUtil.initNewELProcessor( environment, instance.getExternalId() );
Object expressionResult = processor.eval( ElUtil.removeBrackets( (String)value ) );
environment.setAttribute( attribute, expressionResult );
}
else{
environment.setAttribute( attribute, value );
}
engine.complete( token, null );
}
示例6: evaluate
import javax.el.ELProcessor; //导入方法依赖的package包/类
@Override
@SuppressWarnings("unchecked")
public T evaluate( GraphInstance instance ){
if( StringUtils.isNotBlank( expression ) ){
ELProcessor processor = ElUtil.initNewELProcessor( instance.getEnvironment(), instance.getExternalId() );
Object expressionResult = processor.eval( ElUtil.removeBrackets( expression ) );
return (T)expressionResult;
}
return null;
}
示例7: testBean
import javax.el.ELProcessor; //导入方法依赖的package包/类
@Test
public void testBean(){
ELProcessor processor = ElUtil.initNewELProcessor( new EnvironmentImpl(), null );
processor.defineBean( "client", new Client( 1, "Heli Kopter" ) );
String name = (String)processor.eval( "client.name" );
Assert.assertEquals( name, "Heli Kopter" );
}
示例8: testConditions
import javax.el.ELProcessor; //导入方法依赖的package包/类
@Test
public void testConditions(){
ELProcessor processor = ElUtil.initNewELProcessor( new EnvironmentImpl(), null );
processor.defineBean( "client", new Client( 1, "Heli Kopter" ) );
boolean result = (boolean)processor.eval( "not empty client.name and client.id > 0" );
Assert.assertTrue( result );
}
示例9: testValue
import javax.el.ELProcessor; //导入方法依赖的package包/类
@Test
public void testValue(){
ELProcessor processor = ElUtil.initNewELProcessor( new EnvironmentImpl(), null );
processor.setValue( "throwException", false );
boolean success = (boolean)processor.eval( "not throwException" );
Assert.assertTrue( success );
}
示例10: testEnvironmentBean
import javax.el.ELProcessor; //导入方法依赖的package包/类
@Test
public void testEnvironmentBean(){
EnvironmentImpl environment = new EnvironmentImpl();
environment.setAttribute( "testAtr1", true );
environment.setAttribute( "testAtr2", "33" );
environment.setAttribute( "testAtr3", null );
ELProcessor processor = ElUtil.initNewELProcessor( environment, null );
// this way all the parameters must be prefixed with "env.", but we will at least be able to check unmapped attributes without an exception
processor.defineBean( "env", environment.getAttributes() );
boolean result = (boolean)processor.eval( "empty env.testAtr3 && env.testAtr1 && empty env.unknownAtr" );
Assert.assertTrue( result );
}
示例11: testEnvironmentResolverNull
import javax.el.ELProcessor; //导入方法依赖的package包/类
@Test
public void testEnvironmentResolverNull(){
EnvironmentImpl environment = new EnvironmentImpl();
environment.setAttribute( "testDate1", null );
ELProcessor processor = ElUtil.initNewELProcessor( environment, null );
// in EL, null.fieldName does not throw a nullpointer, and null in conditions always returns false
boolean result = (boolean)processor.eval( "testDate1.time < System.currentTimeMillis()" );
Assert.assertFalse( result );
result = (boolean)processor.eval( "testDate1.whatever > System.currentTimeMillis()" );
Assert.assertFalse( result );
}
示例12: testEnvironmentResolverInstanceIdNull
import javax.el.ELProcessor; //导入方法依赖的package包/类
@Test
public void testEnvironmentResolverInstanceIdNull(){
EnvironmentImpl environment = new EnvironmentImpl();
ELProcessor processor = ElUtil.initNewELProcessor( environment, null );
Long instanceId = (Long)processor.eval( "WORKFLOW_INSTANCE_ID" );
Assert.assertEquals( null, instanceId );
}
示例13: testEnvironmentResolverInstanceId
import javax.el.ELProcessor; //导入方法依赖的package包/类
@Test
public void testEnvironmentResolverInstanceId(){
EnvironmentImpl environment = new EnvironmentImpl();
ELProcessor processor = ElUtil.initNewELProcessor( environment, 55L );
long instanceId = (long)processor.eval( "WORKFLOW_INSTANCE_ID" );
Assert.assertEquals( 55, instanceId );
}
示例14: eval
import javax.el.ELProcessor; //导入方法依赖的package包/类
/**
* Note that we have to use a separate {@link ELProcessor} for each evaluation
* as the {@link OptionsELResolver} may not be reused.
*
* @param expression
* @param options
* @param configuration
* @return the result of the expression evaluation
*/
static Object eval(String expression, Options options, Configuration configuration) {
ELProcessorFactory elpFactory = (ELProcessorFactory) configuration
.getPropertyValue(ELProcessorFactory.EL_PROCESSOR_FACTORY_KEY);
ELProcessor elp = elpFactory.createELProcessor(configuration);
elp.getELManager().addELResolver(new OptionsELResolver(options));
return elp.eval(expression);
}