Class ResourceQuery

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Definition

Namespace:
Tizen.Network.IoTConnectivity
Assembly:
Tizen.Network.IoTConnectivity.dll
API Level:
3

This class provides APIs to manage the query of request.


                
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public class ResourceQuery : IDictionary<string, string>, ICollection<KeyValuePair<string, string>>, IEnumerable<KeyValuePair<string, string>>, IEnumerable, IDisposable
Inheritance
System.Object
ResourceQuery
Implements
IDictionary<System.String, System.String>
System.Collections.Generic.ICollection<System.Collections.Generic.KeyValuePair<System.String, System.String>>
System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<System.String, System.String>>
IEnumerable
System.IDisposable

Constructors

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ResourceQuery()

The resource query constructor.

Declaration

                
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public ResourceQuery()
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
Exceptions
Type Condition
System.NotSupportedException

Thrown when the iotcon is not supported.
OutOfMemoryException

Thrown when there is not enough memory.
See Also
API Level: 3
Feature: http://tizen.org/feature/iot.ocf

Properties

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Count

Gets the number of query elements.

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public int Count { get; }
Property Value
Type Description
Int32

The number of query elements.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query.Add("key", "value");
    query.Add("newKey", "sample value");
    var count = query.Count;
    Console.WriteLine("There are {0} keys in the query object", count);
API Level: 3
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Interface

Gets and sets the resource interface of the query.

Declaration

                
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public string Interface { get; set; }
Property Value
Type Description
System.String

The resource interface of the query. Setter value could be a value, such as DefaultInterface.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query.Interface = ResourceInterfaces.LinkInterface;
Exceptions
Type Condition
System.NotSupportedException

Thrown when the iotcon is not supported.
System.ArgumentException

Thrown when there is an invalid parameter.
System.InvalidOperationException

Thrown when the operation is invalid.
API Level: 3
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IsReadOnly

Represents whether the collection is readonly.

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public bool IsReadOnly { get; }
Property Value
Type Description
Boolean

Whether the collection is readonly.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    if (query.IsReadOnly)
        Console.WriteLine("Read only query");
API Level: 3
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Item[String]

Gets or sets the query data.

Declaration

                
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public string this[string key] { get; set; }
Parameters
Type Name Description
System.String key

The query key to get or set.
Property Value
Type Description
System.String

The query data.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query["key1"] = "sample-data";
    Console.WriteLine("query has : {0}", query["key1"]);
API Level: 3
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Keys

Contains all the query keys.

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public ICollection<string> Keys { get; }
Property Value
Type Description
System.Collections.Generic.ICollection<System.String>

All the query keys.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query.Add("key", "value");
    query.Add("newKey", "sample value");
    var keys = query.Keys;
    Console.WriteLine("Resource query contains keys {0} and {1}", keys.ElementAt(0), keys.ElementAt(1));
API Level: 3
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Type

Gets and sets the resource type of the query.

Declaration

                
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public string Type { get; set; }
Property Value
Type Description
System.String

The resource type of the query.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query.Type = "org.tizen.light";
    Console.WriteLine("Type of query : {0}", query.Type);
Exceptions
Type Condition
System.NotSupportedException

Thrown when the iotcon is not supported.
System.ArgumentException

Thrown when there is an invalid parameter.
System.InvalidOperationException

Thrown when the operation is invalid.
API Level: 3
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Values

Contains all the query values.

Declaration

                
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public ICollection<string> Values { get; }
Property Value
Type Description
System.Collections.Generic.ICollection<System.String>

All the query values.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query.Add("key", "value");
    query.Add("newKey", "sample value");
    var values = query.Values;
    Console.WriteLine("Resource query contains values {0} and {1}", values.ElementAt(0), values.ElementAt(1));
API Level: 3

Methods

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Add(KeyValuePair<String, String>)

Adds a query key and a value as a key value pair.

Declaration

                
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public void Add(KeyValuePair<string, string> item)
Parameters
Type Name Description
System.Collections.Generic.KeyValuePair<System.String, System.String> item

The key value pair.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query.Add(new KeyValuePair<string, string>("key1", "value1"));
See Also
API Level: 3
Feature: http://tizen.org/feature/iot.ocf
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Add(String, String)

Adds a new key and correspoding value into the query.

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public void Add(string key, string value)
Parameters
Type Name Description
System.String key

The key of the query to insert.
System.String value

The string data to insert into the query.
Remarks

The full length of query should be less than or equal to 64.

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    ResourceQuery query = new ResourceQuery();
    query.Add("key1", "value1");
Exceptions
Type Condition
System.NotSupportedException

Thrown when the iotcon is not supported.
System.ArgumentException

Thrown when there is an invalid parameter.
System.InvalidOperationException

Thrown when the operation is invalid.
See Also
API Level: 3
Feature: http://tizen.org/feature/iot.ocf
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Clear()

Clears the query collection.

Declaration

                
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public void Clear()
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query.Add("key1", "value1");
    query.Add("key2", "value2");
    query.Clear();
Exceptions
Type Condition
System.NotSupportedException

Thrown when the iotcon is not supported.
System.InvalidOperationException

Thrown when the operation is invalid.
API Level: 3
Feature: http://tizen.org/feature/iot.ocf
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Contains(KeyValuePair<String, String>)

Checks if the given query pair exists.

Declaration

                
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public bool Contains(KeyValuePair<string, string> item)
Parameters
Type Name Description
System.Collections.Generic.KeyValuePair<System.String, System.String> item

The key value pair.
Returns
Type Description
Boolean

True if exists. Otherwise, false.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query.Add(new KeyValuePair<string, string>("key1", "value1"));
    var isPresent = query.Contains(new KeyValuePair<string, string>("key1", "value1"));
    if (isPresent)
        Console.WriteLine("Key value pair is present");
API Level: 3
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ContainsKey(String)

Checks whether the given key exists in the query collection.

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public bool ContainsKey(string key)
Parameters
Type Name Description
System.String key

The key to look for.
Returns
Type Description
Boolean

true if exists. Otherwise, false.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query.Add("key1", "value1");
    if (query.ContainsKey("key1"))
        Console.WriteLine("query conatins key : key1");
API Level: 3
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CopyTo(KeyValuePair<String, String>[], Int32)

Copies the elements of the query collection to an array, starting at a particular index.

Declaration

                
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public void CopyTo(KeyValuePair<string, string>[] array, int arrayIndex)
Parameters
Type Name Description
System.Collections.Generic.KeyValuePair<System.String, System.String>[] array

The destination array.
Int32 arrayIndex

Index parameter.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query.Add(new KeyValuePair<string, string>("key1", "value1"));
    KeyValuePair<string, string>[] dest = new KeyValuePair<string, string>[query.Count];
    query.CopyTo(dest, 0);
    Console.WriteLine("Dest conatins ({0}, {1})", dest[0].Key, dest[0].Value);
API Level: 3
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Dispose()

Releases any unmanaged resources used by this object.

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public void Dispose()
API Level: 3
Feature: http://tizen.org/feature/iot.ocf
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Dispose(Boolean)

Releases any unmanaged resources used by this object. Can also dispose any other disposable objects.

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protected virtual void Dispose(bool disposing)
Parameters
Type Name Description
Boolean disposing

If true, disposes any disposable objects. If false, does not dispose disposable objects.
API Level: 3
Feature: http://tizen.org/feature/iot.ocf
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Finalize()

Destructor of the ResourceQuery class.

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protected void Finalize()
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GetEnumerator()

Gets the enumerator to the query collection.

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public IEnumerator<KeyValuePair<string, string>> GetEnumerator()
Returns
Type Description
System.Collections.Generic.IEnumerator<System.Collections.Generic.KeyValuePair<System.String, System.String>>

Enumerator to query pairs.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query.Add(new KeyValuePair<string, string>("key1", "value1"));
    query.Add(new KeyValuePair<string, string>("key2", "value2"));
    foreach (KeyValuePair<string, string> pair in query)
    {
        Console.WriteLine("key : {0}, value : {1}", pair.Key, pair.Value);
    }
API Level: 3
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Remove(KeyValuePair<String, String>)

Removes the given key value pair from the query.

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public bool Remove(KeyValuePair<string, string> item)
Parameters
Type Name Description
System.Collections.Generic.KeyValuePair<System.String, System.String> item

The key value pair to remove.
Returns
Type Description
Boolean

True if operation is successful. Otherwise, false.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query.Add(new KeyValuePair<string, string>("key1", "value1"));
    var result = query.Remove(new KeyValuePair<string, string>("key1", "value1"));
Exceptions
Type Condition
System.ArgumentException

Thrown when there is an invalid parameter.
See Also
API Level: 3
Feature: http://tizen.org/feature/iot.ocf
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Remove(String)

Removes the key and its associated value from the query.

Declaration

                
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public bool Remove(string key)
Parameters
Type Name Description
System.String key

The ID of the query to delete.
Returns
Type Description
Boolean

True if operation is successful. Otherwise, false.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query.Add("key1", "value1");
    var result = query.Remove("key1");
Exceptions
Type Condition
System.NotSupportedException

Thrown when the iotcon is not supported.
System.ArgumentException

Thrown when there is an invalid parameter.
System.InvalidOperationException

Thrown when the operation is invalid.
See Also
API Level: 3
Feature: http://tizen.org/feature/iot.ocf
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TryGetValue(String, out String)

Gets the value associated with the specified key.

Declaration

                
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public bool TryGetValue(string key, out string value)
Parameters
Type Name Description
System.String key

The query key.
System.String value

Value corresponding to query key.
Returns
Type Description
Boolean

True if the key exists, false otherwise.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query.Add("key1", "value1");
    string value;
    var isPresent = query.TryGetValue("key1", out value);
    if (isPresent)
        Console.WriteLine("value : {0}", value);
API Level: 3

Explicit Interface Implementations

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IEnumerable.GetEnumerator()

Gets the enumerator to the query collection.

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IEnumerator IEnumerable.GetEnumerator()
Returns
Type Description
System.Collections.IEnumerator

The enumerator to the query pairs.
Examples

                

                

                    
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    ResourceQuery query = new ResourceQuery();
    query.Add(new KeyValuePair<string, string>("key1", "value1"));
    query.Add(new KeyValuePair<string, string>("key2", "value2"));
    foreach (KeyValuePair<string, string> pair in query)
    {
        Console.WriteLine("key : {0}, value : {1}", pair.Key, pair.Value);
    }
API Level: 3

Implements

System.Collections.Generic.ICollection<T>
System.Collections.Generic.IEnumerable<T>
System.IDisposable