1 files changed, 734 insertions, 0 deletions
diff --git a/kplato/kptappointment.cc b/kplato/kptappointment.cc
new file mode 100644
index 00000000..897ab390
--- /dev/null
+++ b/kplato/kptappointment.cc
@@ -0,0 +1,734 @@
+/* This file is part of the KDE project
+   Copyright (C) 2005 Dag Andersen <[email protected]>
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation;
+   version 2 of the License.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+*/
+
+#include "kptappointment.h"
+
+#include "kptproject.h"
+#include "kpttask.h"
+#include "kptdatetime.h"
+#include "kptcalendar.h"
+#include "kpteffortcostmap.h"
+#include "kptschedule.h"
+
+#include <kdebug.h>
+
+namespace KPlato
+{
+
+class Resource;
+
+AppointmentInterval::AppointmentInterval() {
+    m_load = 100.0; 
+}
+AppointmentInterval::AppointmentInterval(const AppointmentInterval &interval) {
+    //kdDebug()<<k_funcinfo<<endl;
+    m_start = interval.startTime(); 
+    m_end = interval.endTime(); 
+    m_load = interval.load(); 
+}
+AppointmentInterval::AppointmentInterval(const DateTime &start, const DateTime end, double load) {
+    //kdDebug()<<k_funcinfo<<endl;
+    m_start = start; 
+    m_end = end; 
+    m_load = load; 
+}
+AppointmentInterval::~AppointmentInterval() {
+    //kdDebug()<<k_funcinfo<<endl;
+}
+
+Duration AppointmentInterval::effort(const DateTime &start, const DateTime end) const {
+    if (start >= m_end || end <= m_start) {
+        return Duration::zeroDuration;
+    }
+    DateTime s = (start > m_start ? start : m_start);
+    DateTime e = (end < m_end ? end : m_end);
+    return (e - s) * m_load / 100;
+}
+
+Duration AppointmentInterval::effort(const DateTime &time, bool upto) const {
+    if (upto) {
+        if (time <= m_start) {
+            return Duration::zeroDuration;
+        }
+        DateTime e = (time < m_end ? time : m_end);
+        return (e - m_start) * m_load / 100;
+    }
+    // from time till end
+    if (time >= m_end) {
+        return Duration::zeroDuration;
+    }
+    DateTime s = (time > m_start ? time : m_start);
+    return (m_end - s) * m_load / 100;
+}
+
+bool AppointmentInterval::loadXML(QDomElement &element) {
+    //kdDebug()<<k_funcinfo<<endl;
+    bool ok;
+    QString s = element.attribute("start");
+    if (s != "")
+        m_start = DateTime::fromString(s);
+    s = element.attribute("end");
+    if (s != "")
+        m_end = DateTime::fromString(s);
+    m_load = element.attribute("load", "100").toDouble(&ok);
+    if (!ok) m_load = 100;
+    return m_start.isValid() && m_end.isValid();
+}
+
+void AppointmentInterval::saveXML(QDomElement &element) const {
+    QDomElement me = element.ownerDocument().createElement("interval");
+    element.appendChild(me);
+
+    me.setAttribute("start", m_start.toString(Qt::ISODate));
+    me.setAttribute("end", m_end.toString(Qt::ISODate));
+    me.setAttribute("load", m_load);
+}
+
+bool AppointmentInterval::isValid() const {
+    return m_start.isValid() && m_end.isValid();
+}
+
+AppointmentInterval AppointmentInterval::firstInterval(const AppointmentInterval &interval, const DateTime &from) const {
+    //kdDebug()<<k_funcinfo<<interval.startTime().toString()<<" - "<<interval.endTime().toString()<<" from="<<from.toString()<<endl;
+    DateTime f = from;
+    DateTime s1 = m_start;
+    DateTime e1 = m_end;
+    DateTime s2 = interval.startTime();
+    DateTime e2 = interval.endTime();
+    AppointmentInterval a;
+    if (f.isValid() && f >= e1 && f >= e2) {
+        return a;
+    }
+    if (f.isValid()) {
+        if (s1 < f && f < e1) {
+            s1 = f;
+        }
+        if (s2 < f && f < e2) {
+            s2 = f;
+        }
+    } else {
+        f = s1 < s2 ? s1 : s2;
+    }
+    if (s1 < s2) {
+        a.setStartTime(s1);
+        if (e1 <= s2) {
+            a.setEndTime(e1);
+        } else {
+            a.setEndTime(s2);
+        }
+        a.setLoad(m_load);
+    } else if (s1 > s2) {
+        a.setStartTime(s2);
+        if (e2 <= s1) {
+            a.setEndTime(e2);
+        } else {
+            a.setEndTime(s1);
+        }
+        a.setLoad(interval.load());
+    } else {
+        a.setStartTime(s1);
+        if (e1 <= e2)
+            a.setEndTime(e1);
+        else 
+            a.setEndTime(e2);
+        a.setLoad(m_load + interval.load());
+    }
+    //kdDebug()<<k_funcinfo<<a.startTime().toString()<<" - "<<a.endTime().toString()<<" load="<<a.load()<<endl;
+    return a;
+}
+
+//////
+
+Appointment::UsedEffortItem::UsedEffortItem(QDate date, Duration effort, bool overtime) {
+    m_date = date;
+    m_effort = effort;
+    m_overtime = overtime;
+}
+QDate Appointment::UsedEffortItem::date() { 
+    return m_date; 
+}
+Duration Appointment::UsedEffortItem::effort() {
+    return m_effort; 
+}
+bool Appointment::UsedEffortItem::isOvertime() { 
+    return m_overtime; 
+}
+
+Appointment::UsedEffort::UsedEffort() { 
+    setAutoDelete(true); 
+}
+
+void Appointment::UsedEffort::inSort(QDate date, Duration effort, bool overtime) {
+    UsedEffortItem *item = new UsedEffortItem(date, effort, overtime);
+    QPtrList<UsedEffortItem>::inSort(item);
+}
+
+Duration Appointment::UsedEffort::usedEffort(bool includeOvertime) const {
+    Duration eff;
+    QPtrListIterator<UsedEffortItem> it(*this);
+    for (; it.current(); ++it) {
+        if (includeOvertime || !it.current()->isOvertime()) {
+            eff += it.current()->effort();
+        }
+    }
+    return eff;
+}
+        
+Duration Appointment::UsedEffort::usedEffort(const QDate &date, bool includeOvertime) const {
+    Duration eff;
+    QPtrListIterator<UsedEffortItem> it(*this);
+    for (; it.current(); ++it) {
+        if ((includeOvertime || !it.current()->isOvertime()) && 
+            it.current()->date() == date) {
+            eff += it.current()->effort();
+        }
+    }
+    return eff;
+}
+
+Duration Appointment::UsedEffort::usedEffortTo(const QDate &date, bool includeOvertime) const {
+    Duration eff;
+    QPtrListIterator<UsedEffortItem> it(*this);
+    for (; it.current(); ++it) {
+        if ((includeOvertime || !it.current()->isOvertime()) && 
+            it.current()->date() <= date) {
+            eff += it.current()->effort();
+        }
+    }
+    return eff;
+}
+
+Duration Appointment::UsedEffort::usedOvertime() const {
+    UsedEffortItem *item = getFirst();
+    return item==0 ? Duration::zeroDuration : usedOvertime(item->date());
+}
+
+Duration Appointment::UsedEffort::usedOvertime(const QDate &date) const {
+    Duration eff;
+    QPtrListIterator<UsedEffortItem> it(*this);
+    for (; it.current(); ++it) {
+        if (it.current()->isOvertime() && it.current()->date() == date) {
+            eff += it.current()->effort();
+        }
+    }
+    return eff;
+}
+
+Duration Appointment::UsedEffort::usedOvertimeTo(const QDate &date) const {
+    Duration eff;
+    QPtrListIterator<UsedEffortItem> it(*this);
+    for (; it.current(); ++it) {
+        if (it.current()->isOvertime() && it.current()->date() <= date) {
+            eff += it.current()->effort();
+        }
+    }
+    return eff;
+}
+
+bool Appointment::UsedEffort::load(QDomElement &element) {
+    QString s;
+    QDomNodeList list = element.childNodes();
+    for (unsigned int i=0; i<list.count(); ++i) {
+        if (list.item(i).isElement()) {
+            QDomElement e = list.item(i).toElement();
+            if (e.tagName() == "actual-effort") {
+                QDate date;
+                s = e.attribute("date");
+                if (s != "")
+                    date = QDate::fromString(s, Qt::ISODate);
+                Duration eff = Duration::fromString(e.attribute("effort"));
+                bool ot = e.attribute("overtime", "0").toInt();
+                if (date.isValid()) {
+                    inSort(date, eff, ot);
+                } else {
+                    kdError()<<k_funcinfo<<"Load failed, illegal date: "<<e.attribute("date")<<endl;
+                }
+            }
+        }   
+    }
+    return true;
+}
+
+void Appointment::UsedEffort::save(QDomElement &element) const {
+    if (isEmpty()) return;
+    QPtrListIterator<UsedEffortItem> it = *this;
+    for (; it.current(); ++it) {
+        QDomElement me = element.ownerDocument().createElement("actual-effort");
+        element.appendChild(me);
+        me.setAttribute("date",it.current()->date().toString(Qt::ISODate));
+        me.setAttribute("effort",it.current()->effort().toString());
+        me.setAttribute("overtime",it.current()->isOvertime());
+    }
+}
+
+int Appointment::UsedEffort::compareItems(QPtrCollection::Item item1, QPtrCollection::Item item2) {
+    QDate d1 = static_cast<UsedEffortItem*>(item1)->date();
+    QDate d2 = static_cast<UsedEffortItem*>(item2)->date();
+    if (d1 > d2) return 1;
+    if (d1 < d2) return -1;
+    return 0;
+}
+
+////
+Appointment::Appointment() 
+    : m_extraRepeats(), m_skipRepeats() {
+    //kdDebug()<<k_funcinfo<<"("<<this<<")"<<endl;
+    m_resource=0;
+    m_node=0;
+    m_repeatInterval=Duration();
+    m_repeatCount=0;
+
+    m_intervals.setAutoDelete(true);
+}
+
+Appointment::Appointment(Schedule *resource, Schedule *node, DateTime start, DateTime end, double load) 
+    : m_extraRepeats(), 
+      m_skipRepeats() {
+    //kdDebug()<<k_funcinfo<<"("<<this<<")"<<endl;
+    m_node = node;
+    m_resource = resource;
+    m_repeatInterval = Duration();
+    m_repeatCount = 0;
+
+    addInterval(start, end, load);
+
+    m_intervals.setAutoDelete(true);
+}
+
+Appointment::Appointment(Schedule *resource, Schedule *node, DateTime start, Duration duration, double load) 
+    : m_extraRepeats(), 
+      m_skipRepeats() {
+    //kdDebug()<<k_funcinfo<<"("<<this<<")"<<endl;
+    m_node = node;
+    m_resource = resource;
+    m_repeatInterval = Duration();
+    m_repeatCount = 0;
+
+    addInterval(start, duration, load);
+    
+    m_intervals.setAutoDelete(true);
+}
+
+Appointment::~Appointment() {
+    //kdDebug()<<k_funcinfo<<"("<<this<<")"<<endl;
+    detach();
+}
+
+void Appointment::addInterval(AppointmentInterval *a) {
+    //kdDebug()<<k_funcinfo<<m_resource->name()<<" to "<<m_node->name()<<endl;
+    m_intervals.inSort(a);
+}
+void Appointment::addInterval(const DateTime &start, const DateTime &end, double load) {
+    addInterval(new AppointmentInterval(start, end, load));
+}
+void Appointment::addInterval(const DateTime &start, const Duration &duration, double load) {
+    DateTime e = start+duration;
+    addInterval(start, e, load);
+}
+
+double Appointment::maxLoad() const {
+    double v = 0.0;
+    QPtrListIterator<AppointmentInterval> it = m_intervals;
+    for (; it.current(); ++it) {
+        if (v < it.current()->load())
+            v = it.current()->load();
+    }
+    return v;
+}
+
+DateTime Appointment::startTime() const {
+    DateTime t;
+    QPtrListIterator<AppointmentInterval> it = m_intervals;
+    for (; it.current(); ++it) {
+        if (!t.isValid() || t > it.current()->startTime())
+            t = it.current()->startTime();
+    }
+    return t;
+}
+
+DateTime Appointment::endTime() const {
+    DateTime t;
+    QPtrListIterator<AppointmentInterval> it = m_intervals;
+    for (; it.current(); ++it) {
+        if (!t.isValid() || t < it.current()->endTime())
+            t = it.current()->endTime();
+    }
+    return t;
+}
+
+void Appointment::deleteAppointmentFromRepeatList(DateTime) {
+}
+
+void Appointment::addAppointmentToRepeatList(DateTime) {
+}
+
+bool Appointment::isBusy(const DateTime &/*start*/, const DateTime &/*end*/) {
+    return false;
+}
+
+bool Appointment::loadXML(QDomElement &element, Project &project, Schedule &sch) {
+    //kdDebug()<<k_funcinfo<<endl;
+    QDictIterator<Node> it = project.nodeDict();
+/*    for (; it.current(); ++it) {
+        kdDebug()<<" Node="<<it.current()->name()<<" id="<<it.currentKey()<<endl;
+    }*/
+    Node *node = project.findNode(element.attribute("task-id"));
+    if (node == 0) {
+        kdError()<<k_funcinfo<<"The referenced task does not exists: "<<element.attribute("task-id")<<endl;
+        return false;
+    }
+    Resource *res = project.resource(element.attribute("resource-id"));
+    if (res == 0) {
+        kdError()<<k_funcinfo<<"The referenced resource does not exists: resource id="<<element.attribute("resource-id")<<endl;
+        return false;
+    }
+    if (!res->addAppointment(this, sch)) {
+        kdError()<<k_funcinfo<<"Failed to add appointment to resource: "<<res->name()<<endl;
+        return false;
+    }
+    if (!node->addAppointment(this, sch)) {
+        kdError()<<k_funcinfo<<"Failed to add appointment to node: "<<node->name()<<endl;
+        m_resource->takeAppointment(this);
+        return false;
+    }
+    //kdDebug()<<k_funcinfo<<"res="<<m_resource<<" node="<<m_node<<endl;
+    QDomNodeList list = element.childNodes();
+    for (unsigned int i=0; i<list.count(); ++i) {
+        if (list.item(i).isElement()) {
+            QDomElement e = list.item(i).toElement();
+            if (e.tagName() == "interval") {
+            AppointmentInterval *a = new AppointmentInterval();
+                if (a->loadXML(e)) {
+                    addInterval(a);
+                } else {
+                    kdError()<<k_funcinfo<<"Could not load interval"<<endl;
+                    delete a;
+                }
+            }
+        }
+    }
+    if (m_intervals.isEmpty()) {
+        return false; 
+    }
+    m_actualEffort.load(element);
+    return true;
+}
+
+void Appointment::saveXML(QDomElement &element) const {
+    if (m_intervals.isEmpty()) {
+        kdError()<<k_funcinfo<<"Incomplete appointment data: No intervals"<<endl;
+    }
+    if (m_resource == 0 || m_resource->resource() == 0) {
+        kdError()<<k_funcinfo<<"Incomplete appointment data: No resource"<<endl;
+        return;
+    }
+    if (m_node == 0 || m_node->node() == 0) {
+        kdError()<<k_funcinfo<<"Incomplete appointment data: No node"<<endl;
+        return; // shouldn't happen
+    }
+    //kdDebug()<<k_funcinfo<<endl;
+    QDomElement me = element.ownerDocument().createElement("appointment");
+    element.appendChild(me);
+
+    me.setAttribute("resource-id", m_resource->resource()->id());
+    me.setAttribute("task-id", m_node->node()->id());
+    QPtrListIterator<AppointmentInterval> it = m_intervals;
+    for (; it.current(); ++it) {
+        it.current()->saveXML(me);
+    }
+    m_actualEffort.save(me);
+}
+
+// Returns the total actual effort for this appointment
+Duration Appointment::plannedEffort() const {
+    Duration d;
+    QPtrListIterator<AppointmentInterval> it = m_intervals;
+    for (; it.current(); ++it) {
+        d += it.current()->effort();
+    }
+    return d;
+}
+
+// Returns the planned effort on the date
+Duration Appointment::plannedEffort(const QDate &date) const {
+    Duration d;
+    DateTime s(date);
+    DateTime e(date.addDays(1));
+    QPtrListIterator<AppointmentInterval> it = m_intervals;
+    for (; it.current(); ++it) {
+        d += it.current()->effort(s, e);
+    }
+    return d;
+}
+
+// Returns the planned effort upto and including the date
+Duration Appointment::plannedEffortTo(const QDate& date) const {
+    Duration d;
+    DateTime e(date.addDays(1));
+    QPtrListIterator<AppointmentInterval> it = m_intervals;
+    for (; it.current(); ++it) {
+        d += it.current()->effort(e, true);
+    }
+    return d;
+}
+
+// Returns a list of efforts pr day for interval start, end inclusive
+// The list only includes days with any planned effort
+EffortCostMap Appointment::plannedPrDay(const QDate& start, const QDate& end) const {
+    //kdDebug()<<k_funcinfo<<m_node->id()<<", "<<m_resource->id()<<endl;
+    EffortCostMap ec;
+    Duration eff;
+    DateTime dt(start);
+    DateTime ndt(dt.addDays(1));
+    double rate = m_resource->normalRatePrHour();
+    AppointmentIntervalListIterator it = m_intervals;
+    for (; it.current(); ++it) {
+        DateTime st = it.current()->startTime();
+        DateTime e = it.current()->endTime();
+        if (end < st.date())
+            break;
+        if (dt.date() < st.date()) {
+            dt.setDate(st.date());
+        }
+        ndt = dt.addDays(1);
+        while (dt.date() <= e.date()) {
+            eff = it.current()->effort(dt, ndt);
+            ec.add(dt.date(), eff, eff.toDouble(Duration::Unit_h) * rate);
+            if (dt.date() < e.date() ) {
+                // loop trough the interval (it spans dates)
+                dt = ndt;
+                ndt = ndt.addDays(1);
+            } else {
+                break;
+            }
+        }
+    }
+    return ec;
+}
+
+
+// Returns the total actual effort for this appointment
+Duration Appointment::actualEffort() const {
+    return m_actualEffort.usedEffort();
+}
+
+// Returns the actual effort on the date
+Duration Appointment::actualEffort(const QDate &date) const {
+    return m_actualEffort.usedEffort(date);
+}
+
+// Returns the actual effort upto and including date
+Duration Appointment::actualEffortTo(const QDate &date) const {
+    return m_actualEffort.usedEffortTo(date);
+}
+
+double Appointment::plannedCost() {
+    if (m_resource && m_resource->resource()) {
+        return plannedEffort().toDouble(Duration::Unit_h) * m_resource->resource()->normalRate(); //FIXME overtime
+    }
+    return 0.0;
+}
+
+//Calculates the planned cost on date
+double Appointment::plannedCost(const QDate &date) {
+    if (m_resource && m_resource->resource()) {
+        return plannedEffort(date).toDouble(Duration::Unit_h) * m_resource->resource()->normalRate(); //FIXME overtime
+    }
+    return 0.0;
+}
+
+//Calculates the planned cost upto and including date
+double Appointment::plannedCostTo(const QDate &date) {
+    if (m_resource && m_resource->resource()) {
+        return plannedEffortTo(date).toDouble(Duration::Unit_h) * m_resource->resource()->normalRate(); //FIXME overtime
+    }
+    return 0.0;
+}
+
+// Calculates the total actual cost for this appointment
+double Appointment::actualCost() {
+    //kdDebug()<<k_funcinfo<<m_actualEffort.usedEffort(false /*ex. overtime*/).toDouble(Duration::Unit_h)<<endl;
+    if (m_resource && m_resource->resource()) {
+        return (m_actualEffort.usedEffort(false /*ex. overtime*/).toDouble(Duration::Unit_h)*m_resource->resource()->normalRate()) + (m_actualEffort.usedOvertime().toDouble(Duration::Unit_h)*m_resource->resource()->overtimeRate());
+    }
+    return 0.0;
+}
+
+// Calculates the actual cost on date
+double Appointment::actualCost(const QDate &date) {
+    if (m_resource && m_resource->resource()) {
+        return (m_actualEffort.usedEffort(date, false /*ex. overtime*/).toDouble(Duration::Unit_h)*m_resource->resource()->normalRate()) + (m_actualEffort.usedOvertime(date).toDouble(Duration::Unit_h)*m_resource->resource()->overtimeRate());
+    }
+    return 0.0;
+}
+
+// Calculates the actual cost upto and including date
+double Appointment::actualCostTo(const QDate &date) {
+    if (m_resource && m_resource->resource()) {
+        return (m_actualEffort.usedEffortTo(date, false /*ex. overtime*/).toDouble(Duration::Unit_h)*m_resource->resource()->normalRate()) + (m_actualEffort.usedOvertimeTo(date).toDouble(Duration::Unit_h)*m_resource->resource()->overtimeRate());
+    }
+    return 0.0;
+}
+
+void Appointment::addActualEffort(QDate date, Duration effort, bool overtime) {
+    m_actualEffort.inSort(date, effort, overtime);
+}
+
+bool Appointment::attach() { 
+    //kdDebug()<<k_funcinfo<<"("<<this<<")"<<endl;
+    if (m_resource && m_node) {
+        m_resource->add(this);
+        m_node->add(this);
+        return true;
+    }
+    kdWarning()<<k_funcinfo<<"Failed: "<<(m_resource ? "" : "resource=0 ") 
+                                       <<(m_node ? "" : "node=0")<<endl;
+    return false;
+}
+
+void Appointment::detach() {
+    //kdDebug()<<k_funcinfo<<"("<<this<<")"<<endl;
+    if (m_resource) {
+        m_resource->takeAppointment(this); // takes from node also
+    }
+    if (m_node) {
+        m_node->takeAppointment(this); // to make it robust
+    }
+}
+
+// Returns the effort from start to end
+Duration Appointment::effort(const DateTime &start, const DateTime &end) const {
+    Duration d;
+    QPtrListIterator<AppointmentInterval> it = m_intervals;
+    for (; it.current(); ++it) {
+        d += it.current()->effort(start, end);
+    }
+    return d;
+}
+// Returns the effort from start for the duration
+Duration Appointment::effort(const DateTime &start, const Duration &duration) const {
+    Duration d;
+    QPtrListIterator<AppointmentInterval> it = m_intervals;
+    for (; it.current(); ++it) {
+        d += it.current()->effort(start, start+duration);
+    }
+    return d;
+}
+// Returns the effort upto time / from time 
+Duration Appointment::effortFrom(const DateTime &time) const {
+    Duration d;
+    QPtrListIterator<AppointmentInterval> it = m_intervals;
+    for (; it.current(); ++it) {
+        d += it.current()->effort(time, false);
+    }
+    return d;
+}
+
+Appointment &Appointment::operator=(const Appointment &app) {
+    m_resource = app.resource();
+    m_node = app.node();
+    m_repeatInterval = app.repeatInterval();
+    m_repeatCount = app.repeatCount();
+
+    m_intervals.clear();
+    QPtrListIterator<AppointmentInterval> it = app.intervals();
+    for (; it.current(); ++it) {
+        addInterval(new AppointmentInterval(*(it.current())));
+    }
+    return *this;
+}
+
+Appointment &Appointment::operator+=(const Appointment &app) {
+    *this = *this + app;
+    return *this;
+}
+
+Appointment Appointment::operator+(const Appointment &app) {
+    Appointment a;
+    AppointmentIntervalList ai = app.intervals();
+    AppointmentInterval i;
+    AppointmentInterval *i1 = m_intervals.first();
+    AppointmentInterval *i2 = ai.first();
+    DateTime from;
+    while (i1 || i2) {
+        if (!i1) {
+            if (!from.isValid() || from < i2->startTime())
+                from = i2->startTime();
+            a.addInterval(from, i2->endTime(), i2->load());
+            //kdDebug()<<"Interval+ (i2): "<<from.toString()<<" - "<<i2->endTime().toString()<<endl;
+            from = i2->endTime();
+            i2 = ai.next();
+            continue;
+        }
+        if (!i2) {
+            if (!from.isValid() || from < i1->startTime())
+                from = i1->startTime();
+            a.addInterval(from, i1->endTime(), i1->load());
+            //kdDebug()<<"Interval+ (i1): "<<from.toString()<<" - "<<i1->endTime().toString()<<endl;
+            from = i1->endTime();
+            i1 = m_intervals.next();
+            continue;
+        }
+        i =  i1->firstInterval(*i2, from);
+        if (!i.isValid()) {
+            break;
+        }
+        a.addInterval(i);
+        from = i.endTime();
+        //kdDebug()<<"Interval+ (i): "<<i.startTime().toString()<<" - "<<i.endTime().toString()<<" load="<<i.load()<<endl;
+        if (i1 && a.endTime() >= i1->endTime()) {
+            i1 = m_intervals.next();
+        }
+        if (i2 && a.endTime() >= i2->endTime()) {
+            i2 = ai.next();
+        }
+    }
+    return a;
+}
+
+#ifndef NDEBUG
+void Appointment::printDebug(QString indent)
+{
+    bool err = false;
+    if (m_node == 0) {
+        kdDebug()<<indent<<"   No node schedule"<<endl;
+        err = true;
+    } else if (m_node->node() == 0) {
+        kdDebug()<<indent<<"   No node"<<endl;
+        err = true;
+    }
+    if (m_resource == 0) {
+        kdDebug()<<indent<<"   No resource schedule"<<endl;
+        err = true;
+    } else if (m_resource->resource() == 0) {
+        kdDebug()<<indent<<"   No resource"<<endl;
+        err = true;
+    }
+    if (err)
+        return;
+    kdDebug()<<indent<<"  + Appointment to schedule: "<<m_node->name()<<" ("<<m_node->type()<<")"<<" resource: "<<m_resource->resource()->name()<<endl;
+    indent += "  ! ";
+    QPtrListIterator<AppointmentInterval> it = intervals();
+    for (; it.current(); ++it) {
+        kdDebug()<<indent<<it.current()->startTime().toString()<<" - "<<it.current()->endTime().toString()<<" load="<<it.current()->load()<<endl;
+    }
+}
+#endif
+
+}  //KPlato namespace