mirror of
https://github.com/hapifhir/hapi-fhir.git
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256 lines
12 KiB
Java
256 lines
12 KiB
Java
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package ca.uhn.fhir.context;
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import static org.apache.commons.lang3.StringUtils.*;
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import java.beans.BeanDescriptor;
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import java.beans.IntrospectionException;
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import java.beans.PropertyDescriptor;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import org.apache.commons.lang3.ObjectUtils;
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import org.apache.commons.lang3.StringUtils;
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import com.ctc.wstx.util.StringUtil;
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import ca.uhn.fhir.model.api.CodeableConceptElement;
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import ca.uhn.fhir.model.api.DatatypeDefinition;
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import ca.uhn.fhir.model.api.ICodeEnum;
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import ca.uhn.fhir.model.api.ICompositeDatatype;
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import ca.uhn.fhir.model.api.ICompositeElement;
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import ca.uhn.fhir.model.api.IDatatype;
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import ca.uhn.fhir.model.api.IElement;
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import ca.uhn.fhir.model.api.IPrimitiveDatatype;
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import ca.uhn.fhir.model.api.IResource;
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import ca.uhn.fhir.model.api.ResourceChoiceElement;
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import ca.uhn.fhir.model.api.ResourceElement;
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import ca.uhn.fhir.model.api.ResourceReference;
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import ca.uhn.fhir.model.api.ResourceReferenceElement;
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import ca.uhn.fhir.model.resource.ResourceDefinition;
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class ModelScanner {
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private static final org.slf4j.Logger ourLog = org.slf4j.LoggerFactory.getLogger(ModelScanner.class);
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private Map<Class<? extends IElement>, BaseRuntimeElementDefinition<?>> myClassToResourceDefinitions = new HashMap<Class<? extends IElement>, BaseRuntimeElementDefinition<?>>();
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private Map<String, BaseRuntimeElementDefinition<?>> myNameToResourceDefinitions = new HashMap<String, BaseRuntimeElementDefinition<?>>();
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// private Map<String, RuntimeResourceDefinition>
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// myNameToDatatypeDefinitions = new HashMap<String,
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// RuntimeDatatypeDefinition>();
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ModelScanner(Class<? extends IResource>... theResourceTypes) throws ConfigurationException {
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for (Class<? extends IResource> nextClass : theResourceTypes) {
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scan(nextClass);
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}
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}
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private String scan(Class<? extends IElement> theClass) throws ConfigurationException {
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BaseRuntimeElementDefinition<?> existingDef = myClassToResourceDefinitions.get(theClass);
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if (existingDef != null) {
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return existingDef.getName();
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}
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ResourceDefinition resourceDefinition = theClass.getAnnotation(ResourceDefinition.class);
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if (resourceDefinition != null) {
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if (!IResource.class.isAssignableFrom(theClass)) {
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throw new ConfigurationException("Resource type contains a @" + ResourceDefinition.class.getSimpleName() + " annotation but does not implement " + IResource.class.getCanonicalName() + ": " + theClass.getCanonicalName());
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}
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@SuppressWarnings("unchecked")
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Class<? extends IResource> resClass = (Class<? extends IResource>) theClass;
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return scanResource(resClass, resourceDefinition);
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}
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DatatypeDefinition datatypeDefinition = theClass.getAnnotation(DatatypeDefinition.class);
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if (datatypeDefinition != null) {
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if (ICompositeDatatype.class.isAssignableFrom(theClass)) {
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@SuppressWarnings("unchecked")
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Class<? extends ICompositeDatatype> resClass = (Class<? extends ICompositeDatatype>) theClass;
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return scanCompositeDatatype(resClass, datatypeDefinition);
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} else if (IPrimitiveDatatype.class.isAssignableFrom(theClass)) {
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@SuppressWarnings("unchecked")
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Class<? extends IPrimitiveDatatype> resClass = (Class<? extends IPrimitiveDatatype>) theClass;
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return scanPrimitiveDatatype(resClass, datatypeDefinition);
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} else {
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throw new ConfigurationException("Resource type contains a @" + DatatypeDefinition.class.getSimpleName() + " annotation but does not implement " + IDatatype.class.getCanonicalName() + ": " + theClass.getCanonicalName());
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}
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}
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throw new ConfigurationException("Resource type does not contain a @" + ResourceDefinition.class.getSimpleName() + " annotation or a @" + DatatypeDefinition.class.getSimpleName() + " annotation: " + theClass.getCanonicalName());
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}
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private String scanCompositeDatatype(Class<? extends ICompositeDatatype> theClass, DatatypeDefinition theDatatypeDefinition) {
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ourLog.debug("Scanning resource class: {}", theClass.getName());
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String resourceName = theDatatypeDefinition.name();
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if (isBlank(resourceName)) {
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throw new ConfigurationException("Resource type @" + ResourceDefinition.class.getSimpleName() + " annotation contains no resource name: " + theClass.getCanonicalName());
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}
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if (myNameToResourceDefinitions.containsKey(resourceName)) {
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if (!myNameToResourceDefinitions.get(resourceName).getImplementingClass().equals(theClass)) {
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throw new ConfigurationException("Detected duplicate element name '" + resourceName + "' in types '" + theClass.getCanonicalName() + "' and '" + myNameToResourceDefinitions.get(resourceName).getImplementingClass() + "'");
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}
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return resourceName;
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}
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RuntimeCompositeDatatypeDefinition resourceDef = new RuntimeCompositeDatatypeDefinition(resourceName, theClass);
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myClassToResourceDefinitions.put(theClass, resourceDef);
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myNameToResourceDefinitions.put(resourceName, resourceDef);
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scanCompositeElementForChildren(theClass, resourceDef);
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return resourceName;
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}
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private String scanPrimitiveDatatype(Class<? extends IPrimitiveDatatype> theClass, DatatypeDefinition theDatatypeDefinition) {
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ourLog.debug("Scanning resource class: {}", theClass.getName());
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String resourceName = theDatatypeDefinition.name();
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if (isBlank(resourceName)) {
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throw new ConfigurationException("Resource type @" + ResourceDefinition.class.getSimpleName() + " annotation contains no resource name: " + theClass.getCanonicalName());
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}
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if (myNameToResourceDefinitions.containsKey(resourceName)) {
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if (!myNameToResourceDefinitions.get(resourceName).getImplementingClass().equals(theClass)) {
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throw new ConfigurationException("Detected duplicate element name '" + resourceName + "' in types '" + theClass.getCanonicalName() + "' and '" + myNameToResourceDefinitions.get(resourceName).getImplementingClass() + "'");
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}
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return resourceName;
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}
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RuntimePrimitiveDatatypeDefinition resourceDef = new RuntimePrimitiveDatatypeDefinition(resourceName, theClass);
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myClassToResourceDefinitions.put(theClass, resourceDef);
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myNameToResourceDefinitions.put(resourceName, resourceDef);
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return resourceName;
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}
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private String scanResource(Class<? extends IResource> theClass, ResourceDefinition resourceDefinition) {
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ourLog.debug("Scanning resource class: {}", theClass.getName());
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String resourceName = resourceDefinition.name();
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if (isBlank(resourceName)) {
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throw new ConfigurationException("Resource type @" + ResourceDefinition.class.getSimpleName() + " annotation contains no resource name: " + theClass.getCanonicalName());
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}
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if (myNameToResourceDefinitions.containsKey(resourceName)) {
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if (!myNameToResourceDefinitions.get(resourceName).getImplementingClass().equals(theClass)) {
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throw new ConfigurationException("Detected duplicate element name '" + resourceName + "' in types '" + theClass.getCanonicalName() + "' and '" + myNameToResourceDefinitions.get(resourceName).getImplementingClass() + "'");
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}
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return resourceName;
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}
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RuntimeResourceDefinition resourceDef = new RuntimeResourceDefinition(theClass, resourceName);
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myClassToResourceDefinitions.put(theClass, resourceDef);
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myNameToResourceDefinitions.put(resourceName, resourceDef);
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scanCompositeElementForChildren(theClass, resourceDef);
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return resourceName;
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}
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private void scanCompositeElementForChildren(Class<? extends ICompositeElement> theClass, BaseRuntimeCompositeElementDefinition<?> theDefinition) {
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Set<String> elementNames = new HashSet<String>();
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Map<Integer, BaseRuntimeChildDefinition> orderToElementDef = new HashMap<Integer, BaseRuntimeChildDefinition>();
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for (Field next : theClass.getFields()) {
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ResourceElement element = next.getAnnotation(ResourceElement.class);
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if (element == null) {
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ourLog.debug("Ignoring non-type field: " + next.getName());
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continue;
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}
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String elementName = element.name();
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int order = element.order();
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int min = element.min();
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int max = element.max();
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ResourceChoiceElement choiceAttr = element.choice();
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List<Class<? extends IElement>> choiceTypes = new ArrayList<Class<? extends IElement>>();
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for (Class<? extends IElement> nextChoiceType : choiceAttr.types()) {
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choiceTypes.add(nextChoiceType);
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}
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if (orderToElementDef.containsKey(order)) {
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throw new ConfigurationException("Detected duplicate field order '" + order + "' in type '" + theClass.getCanonicalName() + "'");
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}
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if (elementNames.contains(elementName)) {
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throw new ConfigurationException("Detected duplicate field name '" + elementName + "' in type '" + theClass.getCanonicalName() + "'");
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}
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ResourceReferenceElement resRefAnnotation = next.getAnnotation(ResourceReferenceElement.class);
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if (choiceTypes.isEmpty() == false) {
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List<String> choiceNames = new ArrayList<String>();
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for (Class<? extends IElement> nextChoiceType : choiceTypes) {
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choiceNames.add(scan(nextChoiceType));
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}
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RuntimeChildChoiceDefinition def = new RuntimeChildChoiceDefinition(next, elementName, min, max, choiceNames);
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orderToElementDef.put(order, def);
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} else if (ResourceReference.class.isAssignableFrom(next.getType())) {
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if (resRefAnnotation == null) {
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throw new ConfigurationException("Field '" + elementName + "' in type '" + theClass.getCanonicalName() + "' is a resource reference but does not have a @" + ResourceReferenceElement.class.getSimpleName() + " annotation");
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}
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Class<? extends IResource> refType = resRefAnnotation.type();
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String elementResourceName = scan(refType);
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if (!(myNameToResourceDefinitions.get(elementResourceName) instanceof IResource)) {
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throw new ConfigurationException("Resource reference '" + elementName + "' in type '" + theClass.getCanonicalName() + "' is a resource reference but references a non-resource type: "
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+ myNameToResourceDefinitions.get(elementResourceName).getClass().getCanonicalName());
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}
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RuntimeChildResourceDefinition def = new RuntimeChildResourceDefinition(next, elementName, elementResourceName, min, max);
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orderToElementDef.put(order, def);
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} else {
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if (resRefAnnotation != null) {
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throw new ConfigurationException("Field '" + elementName + "' in type '" + theClass.getCanonicalName() + "' is not a resource reference but has a @" + ResourceReferenceElement.class.getSimpleName() + " annotation");
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}
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if (!IDatatype.class.isAssignableFrom(next.getType())) {
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throw new ConfigurationException("Field '" + elementName + "' in type '" + theClass.getCanonicalName() + "' is not a resource reference and is not an instance of type " + IDatatype.class.getName());
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}
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CodeableConceptElement concept = next.getAnnotation(CodeableConceptElement.class);
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if (concept != null) {
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Class<? extends ICodeEnum> codeType = concept.type();
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String codeTableName = scanCodeTable(codeType);
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@SuppressWarnings("unchecked")
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String datatypeName = scan((Class<? extends IDatatype>) next.getType());
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RuntimeChildDatatypeDefinition def = new RuntimeChildCodedDatatypeDefinition(next, elementName, datatypeName, min, max, codeTableName);
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orderToElementDef.put(order, def);
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} else {
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@SuppressWarnings("unchecked")
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String datatypeName = scan((Class<? extends IDatatype>) next.getType());
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RuntimeChildDatatypeDefinition def = new RuntimeChildDatatypeDefinition(next, elementName, datatypeName, min, max);
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orderToElementDef.put(order, def);
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}
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}
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elementNames.add(elementName);
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}
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for (int i = 0; i < orderToElementDef.size(); i++) {
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if (!orderToElementDef.containsKey(i)) {
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throw new ConfigurationException("Type '" + theClass.getCanonicalName() + "' does not have a child with order " + i + " (in other words, there are gaps between specified child orders)");
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}
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BaseRuntimeChildDefinition next = orderToElementDef.get(i);
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theDefinition.addChild(next);
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}
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}
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private String scanCodeTable(Class<? extends ICodeEnum> theCodeType) {
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// TODO Auto-generated method stub
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return null;
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}
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}
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