List of usage examples for org.springframework.expression Expression getValue
@Nullable
Object getValue(EvaluationContext context) throws EvaluationException;
From source file:org.springframework.cloud.function.deployer.ApplicationRunner.java
public Object evaluate(String expression, Object root, Object... attrs) { Expression parsed = new SpelExpressionParser(this.config).parseExpression(expression); StandardEvaluationContext context = new StandardEvaluationContext(root); context.setTypeLocator(this.typeLocator); if (attrs.length % 2 != 0) { throw new IllegalArgumentException("Context attributes must be name, value pairs"); }/* ww w. j a va2s . co m*/ for (int i = 0; i < attrs.length / 2; i++) { String name = (String) attrs[2 * i]; Object value = attrs[2 * i + 1]; context.setVariable(name, value); } return parsed.getValue(context); }
From source file:org.springframework.cloud.function.deployer.ApplicationRunner.java
private void runContext(String mainClass, Map<String, String> properties, String... args) { Expression parsed = new SpelExpressionParser().parseExpression("run(#main,#properties,#args)"); StandardEvaluationContext context = this.app; context.setVariable("main", mainClass); context.setVariable("properties", properties); context.setVariable("args", args); parsed.getValue(context); }
From source file:org.springframework.cloud.function.deployer.ApplicationRunner.java
private void closeContext() { if (this.app != null) { Expression parsed = new SpelExpressionParser().parseExpression("close()"); parsed.getValue(this.app); this.app = null; }//from w ww.jav a 2 s. co m }
From source file:org.springframework.cloud.stream.app.tasklaunchrequest.DataFlowTaskLaunchRequestAutoConfiguration.java
private List<String> evaluateArgExpressions(Message message, Map<String, String> argExpressions) { List<String> results = new LinkedList<>(); argExpressions.forEach((k, v) -> { Expression expression = argExpressionsMap.get(k); Assert.notNull(expression, String.format("expression %s cannot be null!", v)); Object val = expression.getValue(message); results.add(String.format("%s=%s", k, val)); });/*from w ww . j av a 2s .com*/ return results; }
From source file:org.springframework.data.document.mongodb.convert.MappingMongoConverter.java
@SuppressWarnings({ "unchecked" })
protected Object getValueInternal(MongoPersistentProperty prop, DBObject dbo, StandardEvaluationContext ctx,
String spelExpr) {/*from w w w .java2 s .com*/
Object o;
if (null != spelExpr) {
Expression x = spelExpressionParser.parseExpression(spelExpr);
o = x.getValue(ctx);
} else {
Object dbObj = dbo.get(prop.getKey());
if (dbObj == null) {
return null;
}
Class<?> propertyType = prop.getType();
Class<?> customTarget = getCustomTarget(dbObj.getClass(), propertyType);
if (customTarget != null) {
return conversionService.convert(dbObj, propertyType);
}
if (dbObj instanceof DBRef) {
dbObj = ((DBRef) dbObj).fetch();
}
if (dbObj instanceof DBObject) {
if (prop.isMap() && dbObj instanceof DBObject) {
// We have to find a potentially stored class to be used first.
Class<?> toType = findTypeToBeUsed((DBObject) dbObj);
Map<String, Object> m = new LinkedHashMap<String, Object>();
for (Map.Entry<String, Object> entry : ((Map<String, Object>) ((DBObject) dbObj).toMap())
.entrySet()) {
if (entry.getKey().equals(CUSTOM_TYPE_KEY)) {
continue;
}
if (null != entry.getValue() && entry.getValue() instanceof DBObject) {
m.put(entry.getKey(), read((null != toType ? toType : prop.getMapValueType()),
(DBObject) entry.getValue()));
} else {
m.put(entry.getKey(), entry.getValue());
}
}
return m;
} else if (prop.isArray() && dbObj instanceof BasicDBObject
&& ((DBObject) dbObj).keySet().size() == 0) {
// It's empty
return Array.newInstance(prop.getComponentType(), 0);
} else if (prop.isCollection() && dbObj instanceof BasicDBList) {
BasicDBList dbObjList = (BasicDBList) dbObj;
List<Object> items = new LinkedList<Object>();
for (int i = 0; i < dbObjList.size(); i++) {
Object dbObjItem = dbObjList.get(i);
if (dbObjItem instanceof DBRef) {
items.add(read(prop.getComponentType(), ((DBRef) dbObjItem).fetch()));
} else if (dbObjItem instanceof DBObject) {
items.add(read(prop.getComponentType(), (DBObject) dbObjItem));
} else {
items.add(dbObjItem);
}
}
List<Object> itemsToReturn = new LinkedList<Object>();
for (Object obj : items) {
itemsToReturn.add(obj);
}
return itemsToReturn;
}
Class<?> toType = findTypeToBeUsed((DBObject) dbObj);
// It's a complex object, have to read it in
if (toType != null) {
dbo.removeField(CUSTOM_TYPE_KEY);
o = read(toType, (DBObject) dbObj);
} else {
o = read(mappingContext.getPersistentEntity(prop.getTypeInformation()), (DBObject) dbObj);
}
} else {
o = dbObj;
}
}
return o;
}
From source file:org.springframework.data.mongodb.core.convert.MappingMongoConverter.java
@SuppressWarnings("unchecked") protected Object getValueInternal(MongoPersistentProperty prop, DBObject dbo, StandardEvaluationContext ctx, String spelExpr) {/*w w w . j a v a2 s. c o m*/ Object o; if (null != spelExpr) { Expression x = spelExpressionParser.parseExpression(spelExpr); o = x.getValue(ctx); } else { Object sourceValue = dbo.get(prop.getFieldName()); if (sourceValue == null) { return null; } Class<?> propertyType = prop.getType(); if (conversions.hasCustomReadTarget(sourceValue.getClass(), propertyType)) { return conversionService.convert(sourceValue, propertyType); } if (sourceValue instanceof DBRef) { sourceValue = ((DBRef) sourceValue).fetch(); } if (sourceValue instanceof DBObject) { if (prop.isMap()) { return readMap(prop.getTypeInformation(), (DBObject) sourceValue); } else if (prop.isArray() && sourceValue instanceof BasicDBObject && ((DBObject) sourceValue).keySet().size() == 0) { // It's empty return Array.newInstance(prop.getComponentType(), 0); } else if (prop.isCollectionLike() && sourceValue instanceof BasicDBList) { return readCollectionOrArray( (TypeInformation<? extends Collection<?>>) prop.getTypeInformation(), (BasicDBList) sourceValue); } TypeInformation<?> toType = typeMapper.readType((DBObject) sourceValue, prop.getTypeInformation()); // It's a complex object, have to read it in if (toType != null) { // TODO: why do we remove the type? // dbo.removeField(CUSTOM_TYPE_KEY); o = read(toType, (DBObject) sourceValue); } else { o = read(mappingContext.getPersistentEntity(prop.getTypeInformation()), (DBObject) sourceValue); } } else { o = sourceValue; } } return o; }
From source file:org.springframework.integration.util.AbstractExpressionEvaluator.java
protected Object evaluateExpression(Expression expression) { return expression.getValue(this.getEvaluationContext()); }