Add methods .elementName and .asMap() to NamedList.

git-svn-id: https://olap4j.svn.sourceforge.net/svnroot/olap4j/trunk@509 c6a108a4-781c-0410-a6c6-c2d559e19af0

Author: julianhyde

src/org/olap4j/driver/xmla/DeferredNamedListImpl.java

@@ -25,6 +25,7 @@
 import org.olap4j.metadata.NamedList;
 
 import java.util.AbstractList;
+import java.util.Map;
 
 /**
  * Named list which instantiates itself on first use.
@@ -116,6 +117,14 @@ public int indexOfName(String name) {
         return getList().indexOfName(name);
     }
 
+    public String elementName(Object element) {
+        return getList().elementName(element);
+    }
+
+    public Map<String, T> asMap() {
+        return getList().asMap();
+    }
+
     protected void populateList(NamedList<T> list) throws OlapException {
         context.olap4jConnection.populateList(
             list, context, metadataRequest, handler, restrictions);

src/org/olap4j/driver/xmla/XmlaOlap4jCellSetMetaData.java

@@ -40,15 +40,16 @@ class XmlaOlap4jCellSetMetaData implements CellSetMetaData {
     final XmlaOlap4jCube cube;
     private final NamedList<CellSetAxisMetaData> axisMetaDataList =
         new ArrayNamedListImpl<CellSetAxisMetaData>() {
-            protected String getName(CellSetAxisMetaData axisMetaData) {
-                return axisMetaData.getAxisOrdinal().name();
+            public String elementName(Object axisMetaData) {
+                return ((CellSetAxisMetaData) axisMetaData).getAxisOrdinal()
+                    .name();
             }
         };
     private final XmlaOlap4jCellSetAxisMetaData filterAxisMetaData;
     private final NamedList<Property> cellProperties =
         new ArrayNamedListImpl<Property>() {
-            protected String getName(Property property) {
-                return property.getName();
+            public String elementName(Object property) {
+                return ((Property) property).getName();
             }
         };
     final Map<String, Property> propertiesByTag;

src/org/olap4j/driver/xmla/XmlaOlap4jLevel.java

@@ -181,8 +181,8 @@ public Type getLevelType() {
 
     public NamedList<Property> getProperties() {
         final NamedList<Property> list = new ArrayNamedListImpl<Property>() {
-            protected String getName(Property property) {
-                return property.getName();
+            public String elementName(Object property) {
+                return ((Property) property).getName();
             }
         };
         // standard properties first

src/org/olap4j/impl/AbstractNamedList.java

@@ -21,14 +21,14 @@
 
 import org.olap4j.metadata.NamedList;
 
-import java.util.AbstractList;
+import java.util.*;
 
 /**
  * Partial implementation of {@link org.olap4j.metadata.NamedList}.
  *
  * <p>Derived class must implement {@link #get(int)} and {@link #size()}, as
  * per {@link java.util.AbstractList}; and must implement
- * {@link #getName(Object)}, to indicate how elements are named.
+ * {@link #elementName(Object)}, to indicate how elements are named.
  *
  * @see org.olap4j.impl.ArrayNamedListImpl
  *
@@ -40,11 +40,9 @@ public abstract class AbstractNamedList<T>
     extends AbstractList<T>
     implements NamedList<T>
 {
-    protected abstract String getName(T t);
-
     public T get(String name) {
         for (T t : this) {
-            if (getName(t).equals(name)) {
+            if (elementName(t).equals(name)) {
                 return t;
             }
         }
@@ -54,12 +52,16 @@ public T get(String name) {
     public int indexOfName(String name) {
         for (int i = 0; i < size(); ++i) {
             T t = get(i);
-            if (getName(t).equals(name)) {
+            if (elementName(t).equals(name)) {
                 return i;
             }
         }
         return -1;
     }
+
+    public Map<String, T> asMap() {
+        return new NamedListMap<T>(this);
+    }
 }
 
 // End AbstractNamedList.java

src/org/olap4j/impl/ArrayNamedListImpl.java

@@ -21,14 +21,13 @@
 
 import org.olap4j.metadata.NamedList;
 
-import java.util.ArrayList;
-import java.util.Collection;
+import java.util.*;
 
 /**
  * Implementation of {@link org.olap4j.metadata.NamedList} which uses
  * {@link java.util.ArrayList} for storage.
  *
- * <p>Derived class must implement {@link #getName(Object)}, to indicate how
+ * <p>Derived class must implement {@link #elementName(Object)}, to indicate how
  * elements are named.
  *
  * @see NamedListImpl
@@ -71,11 +70,9 @@ public ArrayNamedListImpl(Collection<? extends T> c) {
         super(c);
     }
 
-    protected abstract String getName(T t);
-
     public T get(String name) {
         for (T t : this) {
-            if (getName(t).equals(name)) {
+            if (elementName(t).equals(name)) {
                 return t;
             }
         }
@@ -85,12 +82,16 @@ public T get(String name) {
     public int indexOfName(String name) {
         for (int i = 0; i < size(); ++i) {
             T t = get(i);
-            if (getName(t).equals(name)) {
+            if (elementName(t).equals(name)) {
                 return i;
             }
         }
         return -1;
     }
+
+    public Map<String, T> asMap() {
+        return new NamedListMap<T>(this);
+    }
 }
 
 // End ArrayNamedListImpl.java

src/org/olap4j/impl/NamedListImpl.java

@@ -63,8 +63,8 @@ public NamedListImpl(Collection<? extends T> c) {
         super(c);
     }
 
-    protected final String getName(T t) {
-        return t.getName();
+    public final String elementName(Object t) {
+        return ((T) t).getName();
     }
 }
 

src/org/olap4j/impl/NamedListMap.java

@@ -0,0 +1,72 @@
+/*
+// $Id: ArrayNamedListImpl.java 482 2012-01-05 23:27:27Z jhyde $
+//
+// Licensed to Julian Hyde under one or more contributor license
+// agreements. See the NOTICE file distributed with this work for
+// additional information regarding copyright ownership.
+//
+// Julian Hyde 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 org.olap4j.impl;
+
+import org.olap4j.metadata.NamedList;
+
+import java.util.*;
+
+/**
+ * Map backed by a {@link org.olap4j.metadata.NamedList}.
+ *
+ * @author jhyde
+ * @version $Id: AbstractNamedList.java 482 2012-01-05 23:27:27Z jhyde $
+ */
+class NamedListMap<T> extends AbstractMap<String, T> {
+    private final NamedList<T> namedList;
+
+    /**
+     * Creates a NamedListMap.
+     *
+     * @param namedList Named list
+     */
+    public NamedListMap(NamedList<T> namedList) {
+        this.namedList = namedList;
+    }
+
+    public Set<Entry<String, T>> entrySet() {
+        return new AbstractSet<Entry<String, T>>() {
+            public Iterator<Entry<String, T>> iterator() {
+                final Iterator<T> iterator = namedList.iterator();
+                return new Iterator<Entry<String, T>>() {
+                    public boolean hasNext() {
+                        return iterator.hasNext();
+                    }
+
+                    public Entry<String, T> next() {
+                        T x = iterator.next();
+                        String name = namedList.elementName(x);
+                        return new Pair<String, T>(name, x);
+                    }
+
+                    public void remove() {
+                        iterator.remove();
+                    }
+                };
+            }
+
+            public int size() {
+                return namedList.size();
+            }
+        };
+    }
+}
+
+// End NamedListMap.java

src/org/olap4j/impl/Olap4jUtil.java

@@ -484,8 +484,8 @@ public static <T> NamedList<T> unmodifiableNamedList(
         final NamedList<? extends T> list)
     {
         return list instanceof RandomAccess
-        ? new UnmodifiableNamedRandomAccessList<T>(list)
-        : new UnmodifiableNamedList<T>(list);
+            ? new UnmodifiableNamedRandomAccessList<T>(list)
+            : new UnmodifiableNamedList<T>(list);
     }
 
     /**
@@ -615,10 +615,10 @@ private enum DummyEnum {
     }
 
     /**
-     * Implementation of {@link NamedList} whih is immutable and empty.
+     * Implementation of {@link NamedList} that is immutable and empty.
      */
     private static class EmptyNamedList<T> extends AbstractNamedList<T> {
-        protected String getName(Object o) {
+        public String elementName(Object element) {
             throw new UnsupportedOperationException();
         }
 
@@ -652,6 +652,14 @@ public int indexOfName(String s) {
             return list.indexOfName(s);
         }
 
+        public String elementName(Object element) {
+            return list.elementName(element);
+        }
+
+        public Map<String, T> asMap() {
+            return Collections.unmodifiableMap(list.asMap());
+        }
+
         public int size() {
             return list.size();
         }

src/org/olap4j/metadata/NamedList.java

@@ -20,6 +20,7 @@
 package org.olap4j.metadata;
 
 import java.util.List;
+import java.util.Map;
 
 /**
  * Extension to {@link java.util.List} which allows access to members of the
@@ -54,6 +55,22 @@ public interface NamedList<E> extends List<E> {
      * @see #indexOf(Object)
      */
     int indexOfName(String name);
+
+    /**
+     * Returns the name of a given element.
+     *
+     * @param element Element
+     * @return Name of element
+     */
+    String elementName(Object element);
+
+    /**
+     * Returns a view of this named list as a {@link Map} whose key is the name
+     * of each element.
+     *
+     * @return A view of this named list as a map
+     */
+    Map<String, E> asMap();
 }
 
 // End NamedList.java