Work on typing

[lgpl/argeo-commons.git] / org.argeo.api / src / org / argeo / api / gcr / spi / AbstractContent.java

diff --git a/org.argeo.api/src/org/argeo/api/gcr/spi/AbstractContent.java b/org.argeo.api/src/org/argeo/api/gcr/spi/AbstractContent.java
index 79c59f2f66ad06c0b1cf2ca74b0b6917f1610b9a..2d3bcde93c9f23228e2f00c187f2802f903ee936 100644 (file)
--- a/org.argeo.api/src/org/argeo/api/gcr/spi/AbstractContent.java
+++ b/org.argeo.api/src/org/argeo/api/gcr/spi/AbstractContent.java
@@ -3,46 +3,78 @@ package org.argeo.api.gcr.spi;
 import java.util.AbstractMap;
 import java.util.AbstractSet;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.Set;
 
+import javax.xml.namespace.QName;
+
 import org.argeo.api.gcr.Content;
+import org.argeo.api.gcr.CrName;
+
+public abstract class AbstractContent extends AbstractMap<QName, Object> implements Content {
+
+       /*
+        * ATTRIBUTES OPERATIONS
+        */
+       protected abstract Iterable<QName> keys();
 
-public abstract class AbstractContent extends AbstractMap<String, Object> implements Content {
+       protected abstract void removeAttr(QName key);
 
        @Override
-       public Set<Entry<String, Object>> entrySet() {
-//             Set<Entry<String, Object>> result = new HashSet<>();
-//             for (String key : keys()) {
-//                     Entry<String, Object> entry = new Entry<String, Object>() {
-//
-//                             @Override
-//                             public String getKey() {
-//                                     return key;
-//                             }
-//
-//                             @Override
-//                             public Object getValue() {
-//                                     return get(key, Object.class);
-//                             }
-//
-//                             @Override
-//                             public Object setValue(Object value) {
-//                                     throw new UnsupportedOperationException();
-//                             }
-//
-//                     };
-//                     result.add(entry);
-//             }
-               Set<Entry<String, Object>> result = new AttrSet();
+       public Set<Entry<QName, Object>> entrySet() {
+               Set<Entry<QName, Object>> result = new AttrSet();
                return result;
        }
 
-       protected abstract Iterable<String> keys();
+       @Override
+       public Class<?> getType(QName key) {
+               return String.class;
+       }
+
+       @Override
+       public boolean isMultiple(QName key) {
+               return false;
+       }
+
+       @Override
+       public <A> Optional<List<A>> getMultiple(QName key, Class<A> clss) {
+               Object value = get(key);
+               if (value == null)
+                       return null;
+               if (value instanceof List) {
+                       try {
+                               List<A> res = (List<A>) value;
+                               return Optional.of(res);
+                       } catch (ClassCastException e) {
+                               List<A> res = new ArrayList<>();
+                               List<?> lst = (List<?>) value;
+                               try {
+                                       for (Object o : lst) {
+                                               A item = (A) o;
+                                               res.add(item);
+                                       }
+                                       return Optional.of(res);
+                               } catch (ClassCastException e1) {
+                                       return Optional.empty();
+                               }
+                       }
+               } else {// singleton
+                       try {
+                               A res = (A) value;
+                               return Optional.of(Collections.singletonList(res));
+                       } catch (ClassCastException e) {
+                               return Optional.empty();
+                       }
+               }
+       }
 
-       protected abstract void removeAttr(String key);
+       /*
+        * CONTENT OPERATIONS
+        */
 
        @Override
        public String getPath() {
@@ -50,8 +82,9 @@ public abstract class AbstractContent extends AbstractMap<String, Object> implem
                collectAncestors(ancestors, this);
                StringBuilder path = new StringBuilder();
                for (Content c : ancestors) {
-                       String name = c.getName();
-                       if (!"".equals(name))
+                       QName name = c.getName();
+                       // FIXME
+                       if (!CrName.ROOT.get().equals(name))
                                path.append('/').append(name);
                }
                return path.toString();
@@ -74,21 +107,21 @@ public abstract class AbstractContent extends AbstractMap<String, Object> implem
 
        @Override
        public String toString() {
-               return "content "+getPath();
+               return "content " + getPath();
        }
 
        /*
         * SUB CLASSES
         */
 
-       class AttrSet extends AbstractSet<Entry<String, Object>> {
+       class AttrSet extends AbstractSet<Entry<QName, Object>> {
 
                @Override
-               public Iterator<Entry<String, Object>> iterator() {
-                       final Iterator<String> keys = keys().iterator();
-                       Iterator<Entry<String, Object>> it = new Iterator<Map.Entry<String, Object>>() {
+               public Iterator<Entry<QName, Object>> iterator() {
+                       final Iterator<QName> keys = keys().iterator();
+                       Iterator<Entry<QName, Object>> it = new Iterator<Map.Entry<QName, Object>>() {
 
-                               String key = null;
+                               QName key = null;
 
                                @Override
                                public boolean hasNext() {
@@ -96,11 +129,12 @@ public abstract class AbstractContent extends AbstractMap<String, Object> implem
                                }
 
                                @Override
-                               public Entry<String, Object> next() {
+                               public Entry<QName, Object> next() {
                                        key = keys.next();
                                        // TODO check type
-                                       Object value = get(key, Object.class);
-                                       AbstractMap.SimpleEntry<String, Object> entry = new SimpleEntry<>(key, value);
+                                       Optional<?> value = get(key, Object.class);
+                                       assert !value.isEmpty();
+                                       AbstractMap.SimpleEntry<QName, Object> entry = new SimpleEntry<>(key, value.get());
                                        return entry;
                                }
 
@@ -120,7 +154,7 @@ public abstract class AbstractContent extends AbstractMap<String, Object> implem
                @Override
                public int size() {
                        int count = 0;
-                       for (String key : keys()) {
+                       for (QName key : keys()) {
                                count++;
                        }
                        return count;