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Made it possible to inject request parameters in a model and to adapt…
… from a request immediatly instead of using request.getResource(). This way you could adapt your request in a servlet to a model with request parameters as fields.
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56 changes: 56 additions & 0 deletions
56
slice-mapper-api/src/main/java/com/cognifide/slice/mapper/annotation/RequestParameter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| /*- | ||
| * #%L | ||
| * Slice - Mapper API | ||
| * %% | ||
| * Copyright (C) 2012 Cognifide Limited | ||
| * %% | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| * #L% | ||
| */ | ||
| package com.cognifide.slice.mapper.annotation; | ||
|
|
||
| import java.lang.annotation.*; | ||
|
|
||
| /** | ||
| * Indicates that a given field should be mapped from a request parameter . The | ||
| * name of the request parameter is indicated by the name of the field or value of {@link RequestParameter} (if | ||
| * specified). Only a type of string is allowed | ||
| * Example: | ||
| * | ||
| * <pre> | ||
| * {@literal @}SliceResource | ||
| * public class ExampleModel { | ||
| * | ||
| * {@literal @}RequestParameter | ||
| * private String myParameter; | ||
| * | ||
| * {@literal @}RequestParameter("second-parameter") | ||
| * private String secondParameter; | ||
| * } | ||
| * </pre> | ||
| * | ||
| * @author roy.teeuwen | ||
| * | ||
| */ | ||
| @Documented | ||
| @Target(ElementType.FIELD) | ||
| @Retention(RetentionPolicy.RUNTIME) | ||
| public @interface RequestParameter { | ||
|
|
||
| /** | ||
| * Custom request parameter name. If empty, property name is read from field's name. | ||
| * | ||
| * @return value | ||
| */ | ||
| String value() default ""; | ||
| } |
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79 changes: 79 additions & 0 deletions
79
...er/src/main/java/com/cognifide/slice/mapper/impl/processor/RequestParameterProcessor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| /*- | ||
| * #%L | ||
| * Slice - Mapper | ||
| * %% | ||
| * Copyright (C) 2012 Cognifide Limited | ||
| * %% | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| * #L% | ||
| */ | ||
| package com.cognifide.slice.mapper.impl.processor; | ||
|
|
||
| import com.cognifide.slice.mapper.annotation.RequestParameter; | ||
| import com.cognifide.slice.mapper.api.processor.FieldProcessor; | ||
| import com.google.inject.Inject; | ||
| import org.apache.commons.lang.StringUtils; | ||
| import org.apache.sling.api.SlingHttpServletRequest; | ||
| import org.apache.sling.api.resource.Resource; | ||
| import org.apache.sling.api.resource.ValueMap; | ||
|
|
||
| import java.lang.reflect.Field; | ||
| import java.util.ArrayList; | ||
| import java.util.Collection; | ||
| import java.util.List; | ||
|
|
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| public class RequestParameterProcessor implements FieldProcessor { | ||
|
|
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| @Inject | ||
| private SlingHttpServletRequest slingRequest; | ||
|
|
||
| @Override | ||
| public boolean accepts(final Resource resource, final Field field) { | ||
| Class<?> fieldType = field.getType(); | ||
| return (Collection.class.isAssignableFrom(fieldType) || fieldType.equals(String.class)) && field.isAnnotationPresent(RequestParameter.class); | ||
| } | ||
|
|
||
| @Override | ||
| public Object mapResourceToField(Resource resource, ValueMap valueMap, Field field, String propertyName) { | ||
| String parameterName = getParameterName(field); | ||
| Class<?> fieldType = field.getType(); | ||
| if (Collection.class.isAssignableFrom(fieldType)) { | ||
| org.apache.sling.api.request.RequestParameter[] parameters = slingRequest.getRequestParameters(parameterName); | ||
| if (parameters != null) { | ||
| return getParameterValues(parameters); | ||
| } | ||
| } else { | ||
| org.apache.sling.api.request.RequestParameter parameter = slingRequest.getRequestParameter(parameterName); | ||
| if (parameter != null) { | ||
| return parameter.getString(); | ||
| } | ||
| } | ||
| return null; | ||
| } | ||
|
|
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| private List<String> getParameterValues(org.apache.sling.api.request.RequestParameter[] parameters) { | ||
| List<String> result = new ArrayList<String>(); | ||
| for (org.apache.sling.api.request.RequestParameter parameter : parameters) { | ||
| result.add(parameter.getString()); | ||
| } | ||
| return result; | ||
| } | ||
|
|
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| private String getParameterName(Field field) { | ||
| final RequestParameter annotation = field.getAnnotation(RequestParameter.class); | ||
| if ((annotation != null) && StringUtils.isNotBlank(annotation.value())) { | ||
| return annotation.value(); | ||
| } | ||
| return field.getName(); | ||
| } | ||
| } |
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