Finished tutorial 1, Decision Tables.

DVR/src/com/om/example/dvr/domain/ConflictingProgramException.java

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+package com.om.example.dvr.domain;
+
+public class ConflictingProgramException extends RuntimeException {
+   private static final long serialVersionUID = 1L;
+}

DVR/src/com/om/example/dvr/domain/Program.java

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+package com.om.example.dvr.domain;
+
+public class Program {
+
+   public final String programName;
+   public final String episodeName;
+   public final TimeSlot timeSlot;
+
+   public Program(String programName, String episodeName, TimeSlot timeSlot) {
+      this.programName = programName;
+      this.episodeName = episodeName;
+      this.timeSlot = timeSlot;
+   }
+
+   public String getId() {
+      return String.format("(%s:%d)", programName, timeSlot.channel);
+   }
+}

DVR/src/com/om/example/dvr/domain/Schedule.java

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+package com.om.example.dvr.domain;
+
+import java.util.Date;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+
+public class Schedule {
+   private List<Program> scheduledPrograms = new LinkedList<Program>();
+
+   public Program addProgram(String programName, String episodeName, int channel,
+         Date startDateTime, int lengthInMinutes) {
+
+      TimeSlot timeSlot = new TimeSlot(channel, startDateTime, lengthInMinutes);
+
+      if (conflictsWithOtherTimeSlots(timeSlot))
+         throw new ConflictingProgramException();
+
+      Program program = new Program(programName, episodeName, timeSlot);
+      scheduledPrograms.add(program);
+      return program;
+   }
+
+   public void removeProgramById(String programIdToRemove) {
+      for (Iterator<Program> iter = scheduledPrograms.iterator(); iter.hasNext();)
+         if (iter.next().getId().equals(programIdToRemove)) {
+            iter.remove();
+            break;
+         }
+   }
+
+   private boolean conflictsWithOtherTimeSlots(TimeSlot timeSlot) {
+      for (Program current : scheduledPrograms)
+         if (current.timeSlot.conflictsWith(timeSlot))
+            return true;
+
+      return false;
+   }
+}

DVR/src/com/om/example/dvr/domain/TimeSlot.java

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+package com.om.example.dvr.domain;
+
+import java.util.Date;
+
+public class TimeSlot {
+
+   public final int channel;
+   public final Date startDateTime;
+   public final int durationInMinutes;
+
+   public TimeSlot(int channel, Date startDateTime, int durationInMinutes) {
+      this.channel = channel;
+      this.startDateTime = startDateTime;
+      this.durationInMinutes = durationInMinutes;
+   }
+
+   public boolean conflictsWith(TimeSlot other) {
+      if (channel == other.channel && startDateTime.equals(other.startDateTime))
+         return true;
+      return false;
+   }
+}

DVR/src/com/om/example/dvr/fixtures/AddProgramsToSchedule.java

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+package com.om.example.dvr.fixtures;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+import com.om.example.dvr.domain.ConflictingProgramException;
+import com.om.example.dvr.domain.Program;
+import com.om.example.dvr.domain.Schedule;
+
+public class AddProgramsToSchedule {
+   static SimpleDateFormat dateFormat = new SimpleDateFormat("M/d/yyyy|h:mm");
+   private static Schedule schedule = new Schedule();
+   private int channel;
+   private String date;
+   private String startTime;
+   private int minutes;
+   private String programName;
+   private String episodeName;
+   private String lastId;
+
+   public static Schedule getSchedule() {
+      return schedule;
+   }
+
+   public void setName(String name) {
+      this.programName = name;
+   }
+
+   public void setEpisode(String name) {
+      this.episodeName = name;
+   }
+
+   public void setChannel(int channel) {
+      this.channel = channel;
+   }
+
+   public void setDate(String date) {
+      this.date = date;
+   }
+
+   public void setStartTime(String startTime) {
+      this.startTime = startTime;
+   }
+
+   public void setMinutes(int minutes) {
+      this.minutes = minutes;
+   }
+
+   public boolean created() {
+      try {
+         Program p = schedule.addProgram(programName, episodeName, channel,
+               buildStartDateTime(), minutes);
+         lastId = p.getId();
+      } catch (ConflictingProgramException e) {
+         lastId = "n/a";
+         return false;
+      }
+      return true;
+   }
+
+   public String lastId() {
+      return lastId;
+   }
+
+   private Date buildStartDateTime() {
+      try {
+         String dateTime = String.format("%s|%s", date, startTime);
+         return dateFormat.parse(dateTime);
+      } catch (ParseException e) {
+         throw new RuntimeException("Unable to prase date/time", e);
+      }
+   }
+}

DVR/src/com/om/example/dvr/fixtures/RemoveProgramById.java

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+package com.om.example.dvr.fixtures;
+
+public class RemoveProgramById {
+   private String id;
+
+   public RemoveProgramById() {
+   }
+
+   public RemoveProgramById(String id) {
+      this.id = id;
+      execute();
+   }
+
+   public void setId(String id) {
+      this.id = id;
+   }
+
+   public void execute() {
+      AddProgramsToSchedule.getSchedule().removeProgramById(id);
+   }
+}