ModelFromRequest.java
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* Copyright (C) 2023 wcm.io
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* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
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package io.wcm.siteapi.genericedit.model;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.models.factory.InvalidAdaptableException;
import org.apache.sling.models.factory.InvalidModelException;
import org.apache.sling.models.factory.MissingElementsException;
import org.apache.sling.models.factory.ModelClassException;
import org.apache.sling.models.factory.ModelFactory;
import org.apache.sling.models.factory.ValidationException;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.adobe.cq.export.json.ComponentExporter;
final class ModelFromRequest {
private static final Logger log = LoggerFactory.getLogger(ModelFromRequest.class);
private ModelFromRequest() {
// static method only
}
/**
* Checks if the model that is associated with the current request implements the {@link ComponentExporter} interface.
* @param request Request
* @param modelFactory Model factory
* @return Model instance associated with the current request (if it implements {@link ComponentExporter}).
* Otherwise null.
*/
static @Nullable ComponentExporter createModelInstance(@NotNull SlingHttpServletRequest request, @NotNull ModelFactory modelFactory) {
try {
Object instance = modelFactory.getModelFromRequest(request);
if (instance instanceof ComponentExporter) {
return (ComponentExporter)instance;
}
return null;
}
catch (MissingElementsException | InvalidAdaptableException | ModelClassException | ValidationException | InvalidModelException ex) {
log.warn("Unable to get model associated with current request for: {}", request.getResource().getPath(), ex);
return null;
}
}
}