implemented very simple ad rotation support, good enough for our rotating

quote banners - also included quote banners (20 from Webb, 4 new)
2001-04-19 07:24:25 +00:00
parent 609568b95c
commit e25ce3e63e
35 changed files with 354 additions and 8 deletions
@@ -0,0 +1,37 @@
+/*
+ * The contents of this file are subject to the Mozilla Public License Version 1.1
+ * (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.mozilla.org/MPL/>.
+ * 
+ * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
+ * WARRANTY OF ANY KIND, either express or implied. See the License for the specific
+ * language governing rights and limitations under the License.
+ * 
+ * The Original Code is the Venice Web Communities System.
+ * 
+ * The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
+ * for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
+ * Copyright (C) 2001 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
+ * 
+ * Contributor(s): 
+ */
+package com.silverwrist.venice.core;
+
+public interface Advertisement
+{
+  // Image path style values.
+  public static final short CONTEXT_RELATIVE = 0;
+
+  public abstract int getAdID();
+
+  public abstract String getImagePath();
+
+  public abstract short getImagePathStyle();
+
+  public abstract String getCaption();
+
+  public abstract String getLinkURL();
+
+  public abstract void hit(String remote_addr);
+
+} // end interface Advertisement
@@ -107,4 +107,6 @@ public interface UserContext extends SearchMode

  public abstract boolean authenticateWithToken(String token) throws DataException;

+  public abstract Advertisement selectAd();
+
 } // end interface UserContext
@@ -77,4 +77,8 @@ public interface VeniceEngine extends SearchMode

  public abstract int getNumAuditRecordsPerPage();

+  public abstract Advertisement getAdByID(int id);
+
+  public abstract Advertisement selectAd();
+
 } // end interface VeniceEngine
@@ -0,0 +1,195 @@
+/*
+ * The contents of this file are subject to the Mozilla Public License Version 1.1
+ * (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.mozilla.org/MPL/>.
+ * 
+ * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
+ * WARRANTY OF ANY KIND, either express or implied. See the License for the specific
+ * language governing rights and limitations under the License.
+ * 
+ * The Original Code is the Venice Web Communities System.
+ * 
+ * The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
+ * for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
+ * Copyright (C) 2001 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
+ * 
+ * Contributor(s): 
+ */
+package com.silverwrist.venice.core.impl;
+
+import java.sql.*;
+import java.util.Random;
+import com.silverwrist.util.cachemap.*;
+import com.silverwrist.venice.core.*;
+import com.silverwrist.venice.db.*;
+
+class AdvertisementImpl implements Advertisement
+{
+  /*--------------------------------------------------------------------------------
+   * Static data members
+   *--------------------------------------------------------------------------------
+   */
+
+  private static Random rng = new Random(System.currentTimeMillis());
+  private static CacheMap ad_cache = new CacheMap(500);
+
+  /*--------------------------------------------------------------------------------
+   * Attributes
+   *--------------------------------------------------------------------------------
+   */
+
+  private DataPool datapool;
+  private int adid;
+  private String imagepath;
+  private short style;
+  private String caption;
+  private String linkurl;
+
+  /*--------------------------------------------------------------------------------
+   * Constructor
+   *--------------------------------------------------------------------------------
+   */
+
+  protected AdvertisementImpl(DataPool datapool, ResultSet rs) throws SQLException
+  {
+    this.datapool = datapool;
+    this.adid = rs.getInt("adid");
+    this.imagepath = rs.getString("imagepath");
+    this.style = rs.getShort("pathstyle");
+    this.caption = rs.getString("caption");
+    this.linkurl = rs.getString("linkurl");
+
+  } // end constructor
+
+  /*--------------------------------------------------------------------------------
+   * Internal functions
+   *--------------------------------------------------------------------------------
+   */
+
+  private static Advertisement getTheAd(DataPool datapool, Statement stmt, int ad_id) throws SQLException
+  {
+    Integer my_ad_id = new Integer(ad_id);
+    Advertisement rc = (Advertisement)(ad_cache.get(my_ad_id));
+    if (rc!=null)
+      return rc;
+
+    ResultSet rs = stmt.executeQuery("SELECT * From adverts WHERE adid = " + ad_id + ";");
+    if (!(rs.next()))
+      return null;
+    rc = new AdvertisementImpl(datapool,rs);
+    ad_cache.put(my_ad_id,rc);
+    return rc;
+    
+  } // end getTheAd
+
+  /*--------------------------------------------------------------------------------
+   * Implementations from interface Advertisement
+   *--------------------------------------------------------------------------------
+   */
+
+  public int getAdID()
+  {
+    return adid;
+
+  } // end getAdID
+
+  public String getImagePath()
+  {
+    return imagepath;
+
+  } // end getImagePath
+
+  public short getImagePathStyle()
+  {
+    return style;
+
+  } // end getImagePathStyle
+
+  public String getCaption()
+  {
+    return caption;
+
+  } // end getCaption
+
+  public String getLinkURL()
+  {
+    return linkurl;
+
+  } // end getLinkURL
+
+  public void hit(String remote_addr)
+  { // this does nothing right now
+  } // end hit
+
+  /*--------------------------------------------------------------------------------
+   * Static functions for use within package
+   *--------------------------------------------------------------------------------
+   */
+
+  static Advertisement getAdByID(DataPool datapool, int id)
+  {
+    Connection conn = null;
+
+    try
+    { // get a database connection and call the internal function
+      conn = datapool.getConnection();
+      Statement stmt = conn.createStatement();
+      return getTheAd(datapool,stmt,id);
+
+    } // end try
+    catch (SQLException e)
+    { // database error - no ad
+      return null;
+
+    } // end catch
+    finally
+    { // make sure the connection is released before we go
+      if (conn!=null)
+	datapool.releaseConnection(conn);
+
+    } // end finally
+
+  } // end getAdByID
+
+  static Advertisement getRandomAd(DataPool datapool)
+  {
+    Connection conn = null;
+
+    try
+    { // get a database connection and call the internal function
+      conn = datapool.getConnection();
+      Statement stmt = conn.createStatement();
+      ResultSet rs = stmt.executeQuery("SELECT MAX(adid) FROM adverts;");
+      if (!(rs.next()))
+	throw new InternalStateError("getRandomAd() must be able to find MAX(adid)!");
+      int maximum = rs.getInt(1);
+      
+      for (int i=0; i<100; i++)
+      { // select an ad ID
+	int ad_id = rng.nextInt(maximum) + 1;
+	Advertisement rc = getTheAd(datapool,stmt,ad_id);
+	if (rc!=null)
+	  return rc;
+
+      } // end for
+
+      // else just dump out and return null
+
+    } // end try
+    catch (SQLException e)
+    { // database error - no ad
+      return null;
+
+    } // end catch
+    finally
+    { // make sure the connection is released before we go
+      if (conn!=null)
+	datapool.releaseConnection(conn);
+
+    } // end finally
+
+    return null;  // no ad
+    
+  } // end getRandomAd
+
+} // end class AdvertisementImpl
@@ -1345,6 +1345,13 @@ class UserContextImpl implements UserContext, UserBackend

  } // end authenticateWithToken

+  public Advertisement selectAd()
+  {
+    // just get a random ad for now
+    return AdvertisementImpl.getRandomAd(datapool);
+
+  } // end selectAd
+
  /*--------------------------------------------------------------------------------
   * Implementations from interface UserBackend
   *--------------------------------------------------------------------------------
@@ -1567,6 +1567,19 @@ public class VeniceEngineImpl implements VeniceEngine, EngineBackend

  } // end getNumAuditRecordsPerPage

+  public Advertisement getAdByID(int id)
+  {
+    return AdvertisementImpl.getAdByID(datapool,id);
+
+  } // end getAdByID
+
+  public Advertisement selectAd()
+  {
+    // just get a random ad for now
+    return AdvertisementImpl.getRandomAd(datapool);
+
+  } // end selectAd
+
  /*--------------------------------------------------------------------------------
   * Implementations from interface EngineBackend
   *--------------------------------------------------------------------------------