Class Filter (3.4.0)

public sealed class Filter : IMessage<Filter>, IEquatable<Filter>, IDeepCloneable<Filter>, IBufferMessage, IMessage

A holder for any type of filter.

Inheritance

Object > Filter

Implements

IMessage<Filter>, IEquatable<Filter>, IDeepCloneable<Filter>, IBufferMessage, IMessage

Inherited Members

Object.GetHashCode()

Object.GetType()

Object.MemberwiseClone()

Object.ToString()

Namespace

Google.Cloud.Datastore.V1

Assembly

Google.Cloud.Datastore.V1.dll

Constructors

Filter()

public Filter()

Filter(Filter)

public Filter(Filter other)

Parameter
Name	Description
`other`	`Filter`

Properties

CompositeFilter

public CompositeFilter CompositeFilter { get; set; }

A composite filter.

Property Value
Type	Description
`CompositeFilter`

FilterTypeCase

public Filter.FilterTypeOneofCase FilterTypeCase { get; }

Property Value
Type	Description
`Filter.FilterTypeOneofCase`

PropertyFilter

public PropertyFilter PropertyFilter { get; set; }

A filter on a property.

Property Value
Type	Description
`PropertyFilter`

Methods

And(Filter[])

public static Filter And(params Filter[] filters)

Creates a composite filter which is the logical "AND" of all the specified filters.

Parameter
Name	Description
`filters`	`Filter[]` Set of filters to combine. Must not be null or empty, or contain null references.

Returns
Type	Description
`Filter`	A filter representing the logical "AND" of all the elements in `filters`.

And(IEnumerable<Filter>)

public static Filter And(IEnumerable<Filter> filters)

Creates a composite filter which is the logical "AND" of all the specified filters.

Parameter
Name	Description
`filters`	`IEnumerable<Filter>` Set of filters to combine. Must not be null or empty, or contain null references.

Returns
Type	Description
`Filter`	A filter representing the logical "AND" of all the elements in `filters`.

Equal(String, Value)

public static Filter Equal(string propertyName, Value propertyValue)

Creates a filter to check that the specified property is equal to a given value.

Parameters
Name	Description
`propertyName`	`String` The name of the property. Must not be null.
`propertyValue`	`Value` The value to compare against. May be null, which indicates a value with NullValue set.

Returns
Type	Description
`Filter`	The newly created filter.

GreaterThan(String, Value)

public static Filter GreaterThan(string propertyName, Value propertyValue)

Creates a filter to check that the specified property is greater than a given value.

Parameters
Name	Description
`propertyName`	`String` The name of the property. Must not be null.
`propertyValue`	`Value` The value to compare against. May be null, which indicates a value with NullValue set.

Returns
Type	Description
`Filter`	The newly created filter.

GreaterThanOrEqual(String, Value)

public static Filter GreaterThanOrEqual(string propertyName, Value propertyValue)

Creates a filter to check that the specified property is greater than or equal to a given value.

Parameters
Name	Description
`propertyName`	`String` The name of the property. Must not be null.
`propertyValue`	`Value` The value to compare against. May be null, which indicates a value with NullValue set.

Returns
Type	Description
`Filter`	The newly created filter.

HasAncestor(Key)

public static Filter HasAncestor(Key ancestorKey)

Creates a filter to check that an entity has the specified key as an ancestor.

Parameter
Name	Description
`ancestorKey`	`Key` The key to check against. Must not be null.

Returns
Type	Description
`Filter`	The newly created filter.

LessThan(String, Value)

public static Filter LessThan(string propertyName, Value propertyValue)

Creates a filter to check that the specified property is less than a given value.

Parameters
Name	Description
`propertyName`	`String` The name of the property. Must not be null.
`propertyValue`	`Value` The value to compare against. May be null, which indicates a value with NullValue set.

Returns
Type	Description
`Filter`	The newly created filter.

LessThanOrEqual(String, Value)

public static Filter LessThanOrEqual(string propertyName, Value propertyValue)

Creates a filter to check that the specified property is less than or equal to a given value.

Parameters
Name	Description
`propertyName`	`String` The name of the property. Must not be null.
`propertyValue`	`Value` The value to compare against. May be null, which indicates a value with NullValue set.

Returns
Type	Description
`Filter`	The newly created filter.

Property(String, Value, PropertyFilter.Types.Operator)

public static Filter Property(string propertyName, Value propertyValue, PropertyFilter.Types.Operator op)

Creates a filter comparing the specified property with a given value, using a specified operator.

Parameters
Name	Description
`propertyName`	`String` The name of the property. Must not be null.
`propertyValue`	`Value` The value to compare against. May be null, which indicates a value with NullValue set.
`op`	`PropertyFilter.Types.Operator` The comparison operator to use. Must be one of the PropertyFilter.Types.Operator values, and not `Unspecified`.

Returns
Type	Description
`Filter`	The newly created filter.

Remarks

If the operator is known in advance, methods such as Equal(String, Value) and GreaterThan(String, Value) usually allow for better readability. This method is intended for situations where the operator is only known dynamically.