examples/java/src/collections/ship/basic/SampleViews.java

   1 /*-
   2  * See the file LICENSE for redistribution information.
   3  *
   4  * Copyright (c) 2002, 2012 Oracle and/or its affiliates.  All rights reserved.
   5  *
   6  * $Id$
   7  */
   8
   9 package collections.ship.basic;
  10
  11 import com.sleepycat.bind.EntryBinding;
  12 import com.sleepycat.bind.serial.ClassCatalog;
  13 import com.sleepycat.bind.serial.SerialBinding;
  14 import com.sleepycat.collections.StoredEntrySet;
  15 import com.sleepycat.collections.StoredMap;
  16
  17 /**
  18  * SampleViews defines the data bindings and collection views for the sample
  19  * database.
  20  *
  21  * @author Mark Hayes
  22  */
  23 public class SampleViews {
  24
  25     private StoredMap partMap;
  26     private StoredMap supplierMap;
  27     private StoredMap shipmentMap;
  28
  29     /**
  30      * Create the data bindings and collection views.
  31      */
  32     public SampleViews(SampleDatabase db) {
  33
  34         // In this sample, the stored key and data entries are used directly
  35         // rather than mapping them to separate objects. Therefore, no binding
  36         // classes are defined here and the SerialBinding class is used.
  37         //
  38         ClassCatalog catalog = db.getClassCatalog();
  39         EntryBinding partKeyBinding =
  40             new SerialBinding(catalog, PartKey.class);
  41         EntryBinding partDataBinding =
  42             new SerialBinding(catalog, PartData.class);
  43         EntryBinding supplierKeyBinding =
  44             new SerialBinding(catalog, SupplierKey.class);
  45         EntryBinding supplierDataBinding =
  46             new SerialBinding(catalog, SupplierData.class);
  47         EntryBinding shipmentKeyBinding =
  48             new SerialBinding(catalog, ShipmentKey.class);
  49         EntryBinding shipmentDataBinding =
  50             new SerialBinding(catalog, ShipmentData.class);
  51
  52         // Create map views for all stores and indices.
  53         // StoredSortedMap is not used since the stores and indices are
  54         // ordered by serialized key objects, which do not provide a very
  55         // useful ordering.
  56         //
  57         partMap =
  58             new StoredMap(db.getPartDatabase(),
  59                           partKeyBinding, partDataBinding, true);
  60         supplierMap =
  61             new StoredMap(db.getSupplierDatabase(),
  62                           supplierKeyBinding, supplierDataBinding, true);
  63         shipmentMap =
  64             new StoredMap(db.getShipmentDatabase(),
  65                           shipmentKeyBinding, shipmentDataBinding, true);
  66     }
  67
  68     // The views returned below can be accessed using the java.util.Map or
  69     // java.util.Set interfaces, or using the StoredMap and StoredEntrySet
  70     // classes, which provide additional methods.  The entry sets could be
  71     // obtained directly from the Map.entrySet() method, but convenience
  72     // methods are provided here to return them in order to avoid down-casting
  73     // elsewhere.
  74
  75     /**
  76      * Return a map view of the part storage container.
  77      */
  78     public final StoredMap getPartMap() {
  79
  80         return partMap;
  81     }
  82
  83     /**
  84      * Return a map view of the supplier storage container.
  85      */
  86     public final StoredMap getSupplierMap() {
  87
  88         return supplierMap;
  89     }
  90
  91     /**
  92      * Return a map view of the shipment storage container.
  93      */
  94     public final StoredMap getShipmentMap() {
  95
  96         return shipmentMap;
  97     }
  98
  99     /**
 100      * Return an entry set view of the part storage container.
 101      */
 102     public final StoredEntrySet getPartEntrySet() {
 103
 104         return (StoredEntrySet) partMap.entrySet();
 105     }
 106
 107     /**
 108      * Return an entry set view of the supplier storage container.
 109      */
 110     public final StoredEntrySet getSupplierEntrySet() {
 111
 112         return (StoredEntrySet) supplierMap.entrySet();
 113     }
 114
 115     /**
 116      * Return an entry set view of the shipment storage container.
 117      */
 118     public final StoredEntrySet getShipmentEntrySet() {
 119
 120         return (StoredEntrySet) shipmentMap.entrySet();
 121     }
 122 }