Detailed Description
The QPlace class represents a set of data about a place.
A place is a point of interest, it could be a favorite restaurant, a park or someone's home. A QPlace object represents a place by acting as a container for various information about that place.
This information can be divided into 2 broad classifications
The place details consist of properties of the place, such as the name, location, contact information and so on. When a place is returned during a search, these details are filled in. Sometimes in order to save bandwidth, there are further details about the place that can be retrieved on an individual place by place basis, if the user is interested. The QPlace::detailsFetched() function can be queried to see if all available details have been fetched, and if not, QPlaceManager::getPlaceDetails() can be used to retrieve them. Precisely which details are populated during a search and which need to be fetched individually may vary from provider to provider. (See Information about plugins).
The rich content of a place consists of items such as images, reviews and editorials. Potentially there may be many rich content items, so they are treated separately from the place details. They can be retrieved in a paged fashion via QPlaceManager::getPlaceContent(). If necessary, the content may be assigned to a place so it can act as a convenient container.
Contact Information
The contact information of a place is based around a common set of contact types. To retrieve all the phone numbers of a place, one would do:
if (place.contactTypes().contains(QPlaceContactDetail::Phone)) {
foreach (const QPlaceContactDetail &number, place.contactDetails(QPlaceContactDetail::Phone))
qDebug() << number.label() << ":" << number.value();
}
The contact types are string values by design to allow for providers to introduce new contact types.
For convenience there are a set of functions which return the value of the first contact detail of each type.
Extended Attributes
Places may have additional attributes which are not covered in the formal API. Similar to contacts attributes are based around a common set of attribute types. To retrieve an extended attribute one would do:
if (place.extendedAttributeTypes().contains(QPlaceAttribute::OpeningHours))
qDebug() << place.extendedAttribute(QPlaceAttribute::OpeningHours).text();
The attribute types are string values by design to allow providers to introduce new attribute types.
Content
The QPlace object is only meant to be a convenient container to hold rich content such as images, reviews and so on. Retrieval of content should happen via QPlaceManager::getPlaceContent().
The content is stored as a QPlaceContent::Collection which contains both the index of the content, as well as the content itself. This enables developers to check whether a particular item has already been retrieved and if not, then request that content.
Attribution
Places have a field for a rich text attribution string. Some providers may require that the attribution be shown when a place is displayed to a user.
Categories
Different categories may be assigned to a place to indicate that the place is associated with those categories. When saving a place, the only meaningful data is the category id, the rest of the category data is effectively ignored. The category must already exist before saving the place (it is not possible to create a new category, assign it to the place, save the place and expect the category to be created).
Saving Caveats
The Places API is currently designed for only saving core details. Saving rich content like images and reviews or details like supplier and rating is not a supported use case. Typically a manager will generally ignore these fields upon save and may produce a warning message if they are populated.
The Places API only supports saving of the following core details:
- name
- place id
- location
- contact details
- icon
- categories (tag-like names to describe a place)
- visibility scope
It is possible that providers may only support a subset of these. See the provider plugins for more details.
Saving of properties such as the rating, extended attributes, images, reviews, editorials and supplier is explicitly not supported by the Places API.
Member Function Documentation
QPlace::QPlace()
Constructs an empty place object.
QPlace::QPlace(const QPlace & other)
Constructs a copy of other.
QPlace::~QPlace()
Destroys this place.
void QPlace::appendContactDetail(const QString & contactType, const QPlaceContactDetail & detail)
Appends a contact detail of a specified contactType.
See QPlaceContactDetail for a list of common contact types.
QString QPlace::attribution() const
Returns a rich text attribution string of the place. Note, some providers may have a requirement where the attribution must be shown whenever a place is displayed to an end user.
See also setAttribution().
Returns categories that this place belongs to.
See also setCategories().
Returns a list of contact details of the specified contactType.
See QPlaceContactDetail for a list of common contact types.
See also setContactDetails().
QStringList QPlace::contactTypes() const
Returns the type of contact details this place has.
See QPlaceContactDetail for a list of common contact types.
Returns a collection of content associated with a place. This collection is a map with the key being the index of the content object and value being the content object itself.
The type specifies which kind of content is to be retrieved.
See also setContent().
bool QPlace::detailsFetched() const
Returns true if the details of this place have been fetched, otherwise returns false.
See also setDetailsFetched().
QPlaceAttribute QPlace::extendedAttribute(const QString & attributeType) const
Returns the exteded attribute corresponding to the specified attributeType. If the place does not have that particular attribute type, a default constructed QPlaceExtendedAttribute is returned.
See also setExtendedAttribute().
QStringList QPlace::extendedAttributeTypes() const
Returns the types of extended attributes that this place has.
QPlaceIcon QPlace::icon() const
Returns the icon of the place.
See also setIcon().
Adds a collection of content of the given type to the place. Any index in content that already exists is overwritten.
bool QPlace::isEmpty() const
Returns a boolean indicating whether the all the fields of the place are empty or not.
QGeoLocation QPlace::location() const
Returns the location of the place.
See also setLocation().
QString QPlace::name() const
Returns the name of the place.
See also setName().
QString QPlace::placeId() const
Returns the identifier of the place. The place identifier is only meaningful to the QPlaceManager that generated it and is not transferable between managers. The place identifier is not guaranteed to be universally unique, but unique for the manager that generated it.
See also setPlaceId().
QString QPlace::primaryEmail() const
Returns the primary email address for this place. This convenience function accesses the first contact detail of the email type. If no email addresses exist, then an empty string is returned.
QString QPlace::primaryFax() const
Returns the primary fax number for this place. This convenience function accesses the first contact detail of the fax type. If no fax details exist, then an empty string is returned.
QString QPlace::primaryPhone() const
Returns the primary phone number for this place. This accesses the first contact detail of the phone number type. If no phone details exist, then an empty string is returned.
QUrl QPlace::primaryWebsite() const
Returns the primary website of the place. This convenience function accesses the first contact detail of the website type. If no websites exist, then an empty string is returned.
Returns an aggregated rating of the place.
See also setRatings().
void QPlace::removeContactDetails(const QString & contactType)
Removes all the contact details of a given contactType.
The contactType is no longer returned when QPlace::contactTypes() is called.
void QPlace::removeExtendedAttribute(const QString & attributeType)
Remove the attribute of attributeType from the place.
The attribute will no longer be listed by QPlace::extendedAttributeTypes()
void QPlace::setAttribution(const QString & attribution)
Sets the attribution string of the place.
See also attribution().
void QPlace::setCategories(const QList<QPlaceCategory> & categories)
Sets the categories that this place belongs to.
See also categories().
void QPlace::setCategory(const QPlaceCategory & category)
Sets a single category that this place belongs to.
void QPlace::setContactDetails(const QString & contactType, QList<QPlaceContactDetail> details)
Sets the contact details of a specified contactType.
If details is empty, then the contactType is removed from the place such that it is no longer returned by QPlace::contactTypes().
See QPlaceContactDetail for a list of common contact types.
See also contactDetails().
Sets a collection of content for the given type.
See also content().
void QPlace::setDetailsFetched(bool fetched)
Sets whether the details of this place have been fetched or not.
See also detailsFetched().
void QPlace::setExtendedAttribute(const QString & attributeType, const QPlaceAttribute & attribute)
Assigns an attribute of the given attributeType to a place. If the given attributeType already exists in the place, then it is overwritten.
If attribute is a default constructed QPlaceAttribute, then the attributeType is removed from the place which means it will not be listed by QPlace::extendedAttributeTypes().
See also extendedAttribute().
void QPlace::setIcon(const QPlaceIcon & icon)
Sets the icon of the place.
See also icon().
void QPlace::setLocation(const QGeoLocation & location)
Sets the location of the place.
See also location().
void QPlace::setName(const QString & name)
Sets the name of the place.
See also name().
void QPlace::setPlaceId(const QString & identifier)
Sets the identifier of the place.
See also placeId().
void QPlace::setRatings(const QPlaceRatings & rating)
Sets the aggregated rating of the place.
See also ratings().
void QPlace::setSupplier(const QPlaceSupplier & supplier)
Sets the supplier of this place to supplier.
See also supplier().
void QPlace::setTotalContentCount(QPlaceContent::Type type, int totalCount)
Sets the totalCount of content objects of the given type.
See also totalContentCount().
Sets the visibility of the place to visibility.
See also visibility().
Returns the supplier of this place.
See also setSupplier().
int QPlace::totalContentCount(QPlaceContent::Type type) const
Returns the total count of content objects of the given type. This total count indicates how many the manager/provider should have available. (As opposed to how many objects this place instance is currently assigned).
A negative count indicates that the total number of items is unknown. By default the total content count is set to 0.
See also setTotalContentCount().
Returns the visibility of the place.
The default visibility of a new place is set to QtLocatin::Unspecified visibility. If a place is saved with unspecified visibility the backend chooses an appropriate default visibility to use when saving.
See also setVisibility().
bool QPlace::operator!=(const QPlace & other) const
Returns true if other is not equal to this place, otherwise returns false.
QPlace & QPlace::operator=(const QPlace & other)
Assigns other to this place and returns a reference to this place.
bool QPlace::operator==(const QPlace & other) const
Returns true if other is equal to this place, otherwise returns false.
