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📄 BasicProgram.html(13.23 KB)
📄 BerkeleyDB-Java-Collections.pdf(405.22 KB)
📄 Entity.html(11.66 KB)
📄 SerializableEntity.html(10.45 KB)
📄 SerializedObjectStorage.html(3.35 KB)
📄 Summary.html(6.88 KB)
📄 Tuple.html(7.62 KB)
📄 UsingCollectionsAPI.html(26.12 KB)
📄 UsingSecondaries.html(16.93 KB)
📄 UsingStoredCollections.html(39.74 KB)
📄 addingdatabaseitems.html(8.88 KB)
📄 collectionOverview.html(20.94 KB)
📄 collectionswithentities.html(6.57 KB)
📄 createbindingscollections.html(10.97 KB)
📄 creatingentitybindings.html(10.69 KB)
📄 developing.html(9.63 KB)
📄 entitieswithcollections.html(10.01 KB)
📄 gettingStarted.css(1.13 KB)
📄 handlingexceptions.html(8.55 KB)
📄 implementingmain.html(9.09 KB)
📄 index.html(16.3 KB)
📄 indexedcollections.html(9.09 KB)
📄 intro.html(8.62 KB)
📄 moreinfo.html(6.35 KB)
📄 openclasscatalog.html(8.3 KB)
📄 opendatabases.html(6.16 KB)
📄 opendbenvironment.html(7.33 KB)
📄 openingforeignkeys.html(8.79 KB)
📄 preface.html(5.62 KB)
📄 removingredundantvalueclasses.html(5 KB)
📄 retrievingbyindexkey.html(11.12 KB)
📄 retrievingdatabaseitems.html(7.68 KB)
📄 sortedcollections.html(5.74 KB)
📄 transientfieldsinbinding.html(6.28 KB)
📄 tuple-serialentitybindings.html(8.48 KB)
📄 tuplekeybindings.html(8.29 KB)
📄 tupleswithkeycreators.html(8.2 KB)
📄 tutorialintroduction.html(11.58 KB)
📄 usingtransactions.html(8.98 KB)

Editing: addingdatabaseitems.html

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <title>Adding Database Items</title>
    <link rel="stylesheet" href="gettingStarted.css" type="text/css" />
    <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
    <link rel="start" href="index.html" title="Berkeley DB Collections Tutorial" />
    <link rel="up" href="BasicProgram.html" title="Chapter 2.  The Basic Program" />
    <link rel="prev" href="usingtransactions.html" title="Using Transactions" />
    <link rel="next" href="retrievingdatabaseitems.html" title="Retrieving Database Items" />
  </head>
  <body>
    <div xmlns="" class="navheader">
      <div class="libver">
        <p>Library Version 11.2.5.3</p>
      </div>
      <table width="100%" summary="Navigation header">
        <tr>
          <th colspan="3" align="center">
		Adding Database Items
	</th>
        </tr>
        <tr>
          <td width="20%" align="left"><a accesskey="p" href="usingtransactions.html">Prev</a> </td>
          <th width="60%" align="center">Chapter 2. 
		The Basic Program
	</th>
          <td width="20%" align="right"> <a accesskey="n" href="retrievingdatabaseitems.html">Next</a></td>
        </tr>
      </table>
      <hr />
    </div>
    <div class="sect1" lang="en" xml:lang="en">
      <div class="titlepage">
        <div>
          <div>
            <h2 class="title" style="clear: both"><a id="addingdatabaseitems"></a>
		Adding Database Items
	</h2>
          </div>
        </div>
      </div>
      <p>
    Adding (as well as updating, removing, and deleting) information
	in the database is accomplished via the standard Java collections
	API. In the example, the 
    <a class="ulink" href="http://download.oracle.com/javase/1.5.0/docs/api/java/util/Map.html#put(K, V)" target="_top">Map.put</a>
    
	method is used to add objects. All standard Java methods for
    modifying a collection may be used with the DB Java Collections API.
</p>
      <p>
    The <code class="methodname">PopulateDatabase.doWork()</code> method calls private methods
	for adding objects to each of the three database stores. It is
	called via the 
    <a class="ulink" href="../../java/com/sleepycat/collections/TransactionRunner.html" target="_top">TransactionRunner</a>
    
	class and was outlined in the previous section.
</p>
      <a id="cb_populatedatabase"></a>
      <pre class="programlisting">import java.util.Map;
import com.sleepycat.collections.TransactionWorker;
...
public class Sample
{
    ...
    private SampleViews views;
    ...
    private class PopulateDatabase implements TransactionWorker
    {
        public void doWork()
            throws Exception
        {
<strong class="userinput"><code>            addSuppliers();
            addParts();
            addShipments();</code></strong>
        }
    }
    ...

<strong class="userinput"><code>    private void addSuppliers()
    {
    }

private void addParts()
    {
    }

private void addShipments()
    {
    }</code></strong>
} </pre>
      <p>
    The <code class="methodname">addSuppliers()</code>, <code class="methodname">addParts()</code> and <code class="methodname">addShipments()</code>
	methods add objects to the Suppliers, Parts and Shipments stores.
	The 
    <a class="ulink" href="http://download.oracle.com/javase/1.5.0/docs/api/java/util/Map.html" target="_top">Map</a>
    
	for each store is obtained from the <code class="classname">SampleViews</code> object.
</p>
      <a id="cb_addsuppliers"></a>
      <pre class="programlisting">    private void addSuppliers()
    {
<strong class="userinput"><code>        Map suppliers = views.getSupplierMap();
        if (suppliers.isEmpty())
        {
            System.out.println("Adding Suppliers");
            suppliers.put(new SupplierKey("S1"),
                          new SupplierData("Smith", 20, "London"));
            suppliers.put(new SupplierKey("S2"),
                          new SupplierData("Jones", 10, "Paris"));
            suppliers.put(new SupplierKey("S3"),
                          new SupplierData("Blake", 30, "Paris"));
            suppliers.put(new SupplierKey("S4"),
                          new SupplierData("Clark", 20, "London"));
            suppliers.put(new SupplierKey("S5"),
                          new SupplierData("Adams", 30, "Athens"));
        }</code></strong>
    }

private void addParts()
    {
<strong class="userinput"><code>        Map parts = views.getPartMap();
        if (parts.isEmpty())
        {
            System.out.println("Adding Parts");
            parts.put(new PartKey("P1"),
                      new PartData("Nut", "Red",
                                    new Weight(12.0, Weight.GRAMS),
                                    "London"));
            parts.put(new PartKey("P2"),
                      new PartData("Bolt", "Green",
                                    new Weight(17.0, Weight.GRAMS),
                                    "Paris"));
            parts.put(new PartKey("P3"),
                      new PartData("Screw", "Blue",
                                    new Weight(17.0, Weight.GRAMS),
                                    "Rome"));
            parts.put(new PartKey("P4"),
                      new PartData("Screw", "Red",
                                    new Weight(14.0, Weight.GRAMS),
                                    "London"));
            parts.put(new PartKey("P5"),
                      new PartData("Cam", "Blue",
                                    new Weight(12.0, Weight.GRAMS),
                                    "Paris"));
            parts.put(new PartKey("P6"),
                      new PartData("Cog", "Red",
                                    new Weight(19.0, Weight.GRAMS),
                                    "London"));
        }</code></strong>
    }

private void addShipments()
    {
<strong class="userinput"><code>        Map shipments = views.getShipmentMap();
        if (shipments.isEmpty())
        {
            System.out.println("Adding Shipments");
            shipments.put(new ShipmentKey("P1", "S1"),
                          new ShipmentData(300));
            shipments.put(new ShipmentKey("P2", "S1"),
                          new ShipmentData(200));
            shipments.put(new ShipmentKey("P3", "S1"),
                          new ShipmentData(400));
            shipments.put(new ShipmentKey("P4", "S1"),
                          new ShipmentData(200));
            shipments.put(new ShipmentKey("P5", "S1"),
                          new ShipmentData(100));
            shipments.put(new ShipmentKey("P6", "S1"),
                          new ShipmentData(100));
            shipments.put(new ShipmentKey("P1", "S2"),
                          new ShipmentData(300));
            shipments.put(new ShipmentKey("P2", "S2"),
                          new ShipmentData(400));
            shipments.put(new ShipmentKey("P2", "S3"),
                          new ShipmentData(200));
            shipments.put(new ShipmentKey("P2", "S4"),
                          new ShipmentData(200));
            shipments.put(new ShipmentKey("P4", "S4"),
                          new ShipmentData(300));
            shipments.put(new ShipmentKey("P5", "S4"),
                          new ShipmentData(400));
        }</code></strong>
    } 
}</pre>
      <p>
    The key and value classes used above were defined in the
    <a class="xref" href="BasicProgram.html#keyandvalueclasses" title="Defining Serialized Key and Value Classes">
		Defining Serialized Key and Value Classes
	</a>.
</p>
      <p>
    In each method above, objects are added only if the map is not
	empty. This is a simple way of allowing the example program to be
	run repeatedly. In real-life applications another technique —
	checking the 
    <a class="ulink" href="http://download.oracle.com/javase/1.5.0/docs/api/java/util/Map.html#containsKey(java.lang.Object)" target="_top">Map.containsKey</a>
    
	method, for example — might be used.
</p>
    </div>
    <div class="navfooter">
      <hr />
      <table width="100%" summary="Navigation footer">
        <tr>
          <td width="40%" align="left"><a accesskey="p" href="usingtransactions.html">Prev</a> </td>
          <td width="20%" align="center">
            <a accesskey="u" href="BasicProgram.html">Up</a>
          </td>
          <td width="40%" align="right"> <a accesskey="n" href="retrievingdatabaseitems.html">Next</a></td>
        </tr>
        <tr>
          <td width="40%" align="left" valign="top">
		Using Transactions
	 </td>
          <td width="20%" align="center">
            <a accesskey="h" href="index.html">Home</a>
          </td>
          <td width="40%" align="right" valign="top"> 
		Retrieving Database Items
	</td>
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