diff options
Diffstat (limited to 'sandbox/kgoodson/mappingFramework/sdo-snapshot/src/main/java/com/agfa/hap/sdo/SelectClause.java')
| -rw-r--r-- | sandbox/kgoodson/mappingFramework/sdo-snapshot/src/main/java/com/agfa/hap/sdo/SelectClause.java | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/sandbox/kgoodson/mappingFramework/sdo-snapshot/src/main/java/com/agfa/hap/sdo/SelectClause.java b/sandbox/kgoodson/mappingFramework/sdo-snapshot/src/main/java/com/agfa/hap/sdo/SelectClause.java new file mode 100644 index 0000000000..259c6d12de --- /dev/null +++ b/sandbox/kgoodson/mappingFramework/sdo-snapshot/src/main/java/com/agfa/hap/sdo/SelectClause.java @@ -0,0 +1,165 @@ +/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.
+ */
+package com.agfa.hap.sdo;
+
+import java.util.Iterator;
+import java.util.Map.Entry;
+
+import com.agfa.hap.sdo.PropertyTree.MapBasedPropertyTree;
+import commonj.sdo.Type;
+
+
+/**
+ * SnapshotDefinition defined by a comma-separated list of
+ * property paths. Datatype properties (e.g. strings, dates etc) are included by default
+ * and should not be part of the select clause. Many-valued properties that are not part of
+ * the select string will be unavailable. Single-valued properties that are not part of
+ * the select string will be available as proxies when they have their Identity property filled
+ * in. Otherwise, they will not be part of the snapshot.
+ * <p />
+ * Using '*' as the name of a property indicates all properties of that type.
+ * Using '**' indicates all properties recursively. This means all child
+ * properties including all properties of those child properties (in case
+ * they are not datatypes) recursively. This is similar to {@link ReachableDefinition}.
+ * <p />
+ * Ex. address, serviceRequests, medicalCase.* for the Patient type will return all
+ * basic properties of Patient, its address, its serviceRequests. And also its complete
+ * medicalCase including many-valued properties and all its direct links.
+ * <p />
+ * Properties that are part of the definition but are not available when creating the snapshot
+ * will be accessed. That may result in {@link PropertyNotAvailableException} being thrown or
+ * might result in lazy retrieval of data (e.g. when working with Hibernate proxies).
+ * @author AMOCZ
+ */
+public class SelectClause implements SnapshotDefinition {
+
+ private PropertyTree propertyTree;
+
+ protected SelectClause(PropertyTree propertyTree) {
+ this.propertyTree = propertyTree;
+ }
+
+ public SelectClause(Type mainType) {
+ this(mainType, "");
+ }
+
+ public SelectClause(Type mainType, String clause) {
+ this.propertyTree = PropertyTree.newPropertyTree((com.agfa.hap.sdo.Type) mainType, clause);
+ }
+
+ @Override
+ public boolean equals(Object other) {
+ if (!(other instanceof SelectClause)) {
+ return false;
+ }
+ return ((SelectClause) other).propertyTree == propertyTree;
+ }
+
+ @Override
+ public int hashCode() {
+ return propertyTree.hashCode();
+ }
+
+ public <T> void visit(DataMapper<T> mapper, ObjectPropertyVisitor visitor, T dataObject) throws Exception {
+ visit(mapper, visitor, dataObject, propertyTree);
+ }
+
+ private <T> void visit(DataMapper<T> mapper, ObjectPropertyVisitor visitor, T dataObject, PropertyTree propertyTree) throws Exception {
+ com.agfa.hap.sdo.Type type = mapper.getType(dataObject);
+ if (type == null) {
+ throw new IllegalArgumentException("Can't visit an object which doesn't have an sdo type. dataObject=" + dataObject);
+ }
+ visitor.startDataObject(dataObject, type);
+ if (propertyTree != null) {
+ for (Property property : type.getProperties()) {
+ if (property.getType().isDataType()) {
+ visitChild(mapper, visitor, dataObject, property, null);
+ } else {
+ PropertyTree tree = propertyTree.getProperty(property);
+ if (tree == null) {
+ visitProxy(mapper, visitor, dataObject, property);
+ } else {
+ visitChildObject(mapper, visitor, dataObject, property, tree);
+ }
+ }
+ }
+ }
+ visitor.endDataObject(dataObject, type);
+ }
+
+ protected <T> void visitProxy(DataMapper<T> mapper, ObjectPropertyVisitor visitor, T dataObject, Property property) throws Exception {
+ if (property.isMany()) {
+ visitor.visitProxyProperty(dataObject, property, null);
+ } else {
+ Property idProp = property.getType().getIdentityProperty();
+ if (idProp != null) {
+ T child = (T) mapper.getProperty(dataObject, property);
+ if (child != null) {
+ Object identity = mapper.getProperty(child, idProp);
+ if (identity != null) { // link doesn't have an identity, so no use to proxy
+ visitor.visitProxyProperty(dataObject, property, identity);
+ }
+ }
+ }
+ }
+ }
+
+ protected <T> void visitChildObject(DataMapper<T> mapper, ObjectPropertyVisitor visitor, T dataObject, Property property, PropertyTree tree) throws Exception {
+ if (mapper.isBulkProperty(dataObject.getClass(), property)) {
+ visitor.visitBulkProperty(dataObject, property, new SelectClause(tree));
+ return;
+ }
+ if (property.isMany()) {
+ Iterator<? extends T> it = mapper.getObjects(dataObject, property);
+ while (it.hasNext()) {
+ visitChild(mapper, visitor, dataObject, property, it.next(), tree);
+ }
+ } else {
+ visitChild(mapper, visitor, dataObject, property, tree);
+ }
+ }
+
+ protected <T> void visitChild(DataMapper<T> mapper, ObjectPropertyVisitor visitor, T parent, Property property, PropertyTree propertyTree) throws Exception {
+ if (mapper.isBulkProperty(parent.getClass(), property)) {
+ visitor.visitBulkProperty(parent, property, new SelectClause(propertyTree));
+ return;
+ }
+ Object value = mapper.getProperty(parent, property);
+ visitChild(mapper, visitor, parent, property, value, propertyTree);
+ }
+
+ private <T> void visitChild(DataMapper<T> mapper, ObjectPropertyVisitor visitor, T parent, Property property, Object value, PropertyTree propertyTree) throws Exception {
+ if (value != null) {
+ boolean recurse = visitor.visitProperty(parent, property, value);
+ if (recurse) {
+ visit(mapper, visitor, (T) value, propertyTree);
+ }
+ }
+ }
+
+ public PropertyTree getPropertyTree() {
+ return propertyTree;
+ }
+
+ public String asCommaSeparatedString(){
+ return this.getPropertyTree().asCommmaSeparatedString();
+ }
+
+}
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