QGIS API Documentation 3.40.0-Bratislava (b56115d8743)
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qgsserverquerystringparameter.cpp
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1/***************************************************************************
2 qgsserverquerystringparameter.cpp - QgsServerQueryStringParameter
3
4 ---------------------
5 begin : 10.7.2019
6 copyright : (C) 2019 by Alessandro Pasotti
7 email : elpaso at itopen dot it
8 ***************************************************************************
9 * *
10 * This program is free software; you can redistribute it and/or modify *
11 * it under the terms of the GNU General Public License as published by *
12 * the Free Software Foundation; either version 2 of the License, or *
13 * (at your option) any later version. *
14 * *
15 ***************************************************************************/
16
18#include "qgsserverrequest.h"
19#include "qgsserverexception.h"
20#include "nlohmann/json.hpp"
21
23 bool required,
25 const QString &description,
26 const QVariant &defaultValue ):
27 mName( name ),
28 mRequired( required ),
29 mType( type ),
30 mDescription( description ),
31 mDefaultValue( defaultValue )
32{
33}
34
39
41{
42
43 // 1: check required
44 if ( mRequired && !QUrlQuery( context.request()->url() ).hasQueryItem( mName ) )
45 {
46 throw QgsServerApiBadRequestException( QStringLiteral( "Missing required argument: '%1'" ).arg( mName ) );
47 }
48
49 // 2: get value from query string or set it to the default
50 QVariant value;
51 if ( QUrlQuery( context.request()->url() ).hasQueryItem( mName ) )
52 {
53 value = QUrlQuery( context.request()->url() ).queryItemValue( mName, QUrl::FullyDecoded );
54 }
55 else if ( mDefaultValue.isValid() )
56 {
57 value = mDefaultValue;
58 }
59
60 if ( value.isValid() )
61 {
62
63 // 3: check type
64 const QMetaType::Type targetType { static_cast< QMetaType::Type >( mType )};
65 // Handle csv list type
66 if ( mType == Type::List )
67 {
68 value = value.toString().split( ',' );
69 }
70 if ( value.userType() != targetType )
71 {
72 bool ok = false;
73 if ( value.canConvert( static_cast<int>( targetType ) ) )
74 {
75 ok = true;
76 switch ( mType )
77 {
78 case Type::String:
79 value = value.toString( );
80 break;
81 case Type::Boolean:
82 value = value.toBool( );
83 break;
84 case Type::Double:
85 value = value.toDouble( &ok );
86 break;
87 case Type::Integer:
88 value = value.toLongLong( &ok );
89 break;
90 case Type::List:
91 // already converted to a string list
92 break;
93 }
94 }
95
96 if ( ! ok )
97 {
98 throw QgsServerApiBadRequestException( QStringLiteral( "Argument '%1' could not be converted to %2" ).arg( mName, typeName( mType ) ) );
99 }
100 }
101
102 // 4: check custom validation
103 if ( mCustomValidator && ! mCustomValidator( context, value ) )
104 {
105 throw QgsServerApiBadRequestException( QStringLiteral( "Argument '%1' is not valid. %2" ).arg( name(), description() ) );
106 }
107 }
108 return value;
109}
110
111void QgsServerQueryStringParameter::setCustomValidator( const customValidator &customValidator )
112{
113 mCustomValidator = customValidator;
114}
115
117{
118 const auto nameString { name().toStdString() };
119 auto dataType { typeName( mType ).toLower().toStdString() };
120 // Map list to string because it will be serialized
121 if ( dataType == "list" )
122 {
123 dataType = "string";
124 }
125 else if ( dataType == "double" )
126 {
127 dataType = "number";
128 }
129 return
130 {
131 { "name", nameString },
132 { "description", description().toStdString() },
133 { "required", mRequired },
134 { "in", "query"},
135 { "style", "form"},
136 { "explode", false },
137 { "schema", {{ "type", dataType }}},
138 // This is unfortunately not in OAS: { "default", mDefaultValue.toString().toStdString() }
139 };
140}
141
143{
144 return mDescription;
145}
146
148{
149 static const QMetaEnum metaEnum = QMetaEnum::fromType<Type>();
150 return metaEnum.valueToKey( static_cast<int>( type ) );
151}
152
154{
155 return mName;
156}
157
158void QgsServerQueryStringParameter::setDescription( const QString &description )
159{
160 mDescription = description;
161}
162
164{
165 return mHidden;
166}
167
169{
170 mHidden = hidden;
171}
Bad request error API exception.
The QgsServerApiContext class encapsulates the resources for a particular client request: the request...
const QgsServerRequest * request() const
Returns the server request object.
QString description() const
Returns parameter description.
virtual QVariant value(const QgsServerApiContext &context) const
Extracts the value from the request context by validating the parameter value and converting it to it...
QgsServerQueryStringParameter(const QString name, bool required=false, Type type=QgsServerQueryStringParameter::Type::String, const QString &description=QString(), const QVariant &defaultValue=QVariant())
Constructs a QgsServerQueryStringParameter object.
void setHidden(bool hidden)
Set the parameter's hidden status, parameters are not hidden by default.
QString name() const
Returns the name of the parameter.
Type
The Type enum represents the parameter type.
@ String
Parameter is a string.
@ Boolean
Parameter is a boolean.
@ List
Parameter is a (comma separated) list of strings, the handler will perform any further required conve...
@ Integer
Parameter is an integer.
@ Double
Parameter is a double.
json data() const
Returns the handler information as a JSON object.
static QString typeName(const Type type)
Returns the name of the type.
void setDescription(const QString &description)
Sets validator description.
void setCustomValidator(const customValidator &customValidator)
Sets the custom validation function to customValidator.
bool hidden() const
Returns true if the parameter is hidden from the schema.
const QString & typeName