Interface IGraphStatement

Represents a graph statement.

Namespace: Dse.Graph

Assembly: Dse.dll

Syntax

public interface IGraphStatement

Properties

ConsistencyLevel

Returns the consistency level to use for this statement.

Declaration

ConsistencyLevel? ConsistencyLevel { get; }

Property Value

Type	Description
System.Nullable<ConsistencyLevel>

GraphLanguage

Gets the graph language to use with this statement.

Declaration

string GraphLanguage { get; }

Property Value

Type	Description
System.String

GraphName

Gets the graph name to use with this statement.

Declaration

string GraphName { get; }

Property Value

Type	Description
System.String

GraphReadConsistencyLevel

Gets the consistency level used for read graph queries.

Declaration

ConsistencyLevel? GraphReadConsistencyLevel { get; }

Property Value

Type	Description
System.Nullable<ConsistencyLevel>

GraphSource

Gets the graph traversal source name to use with this statement.

Declaration

string GraphSource { get; }

Property Value

Type	Description
System.String

GraphWriteConsistencyLevel

Gets the consistency level used for write graph queries.

Declaration

ConsistencyLevel? GraphWriteConsistencyLevel { get; }

Property Value

Type	Description
System.Nullable<ConsistencyLevel>

IsSystemQuery

Determines whether this statement is marked as a system query.

Declaration

bool IsSystemQuery { get; }

Property Value

Type	Description
System.Boolean

ReadTimeoutMillis

Gets the ReadTimeout for the statement that, when is different than 0, overrides ReadTimeoutMillis.

Use System.Threading.Timeout.Infinite to disable timeouts for this Statement.

Declaration

int ReadTimeoutMillis { get; }

Property Value

Type	Description
System.Int32

Timestamp

Gets the default timestamp for this query.

Declaration

DateTimeOffset? Timestamp { get; }

Property Value

Type	Description
System.Nullable<System.DateTimeOffset>

Methods

SetConsistencyLevel(ConsistencyLevel)

Sets the consistency level to use for this statement.

This setting will affect the general consistency when executing the gremlin query. However executing a gremlin query on the server side is going to involve the execution of CQL queries to the persistence engine that is Cassandra. Those queries can be both reads and writes and both will have a settable consistency level. Setting only this property will indicate to the server to use this consistency level for both reads and writes in Cassandra. Read or write consistency level can be set separately with respectively SetGraphReadConsistencyLevel(ConsistencyLevel) and SetGraphWriteConsistencyLevel(ConsistencyLevel) will override the consistency set here.

Declaration

IGraphStatement SetConsistencyLevel(ConsistencyLevel consistency)

Parameters

Type	Name	Description
ConsistencyLevel	consistency

Returns

Type	Description
IGraphStatement

SetGraphLanguage(String)

Sets the graph language to use with this statement.

This property is not required; if it is not set, the default Language will be used when executing the statement.

Declaration

IGraphStatement SetGraphLanguage(string language)

Parameters

Type	Name	Description
System.String	language

Returns

Type	Description
IGraphStatement

SetGraphName(String)

Sets the graph name to use in graph queries. If you don't call this method, it is left unset.

Declaration

IGraphStatement SetGraphName(string name)

Parameters

Type	Name	Description
System.String	name

Returns

Type	Description
IGraphStatement

SetGraphReadConsistencyLevel(ConsistencyLevel)

Sets the consistency level used for the graph read query.

This setting will override the consistency level set with SetConsistencyLevel(ConsistencyLevel) only for the READ part of the graph query.

Declaration

IGraphStatement SetGraphReadConsistencyLevel(ConsistencyLevel consistency)

Parameters

Type	Name	Description
ConsistencyLevel	consistency

Returns

Type	Description
IGraphStatement

SetGraphSource(String)

Sets the graph traversal source name to use in graph queries. If you don't call this method, it defaults to Source.

Declaration

IGraphStatement SetGraphSource(string source)

Parameters

Type	Name	Description
System.String	source

Returns

Type	Description
IGraphStatement

SetGraphSourceAnalytics()

Sets the graph source to the server-defined analytic traversal source ("a") for this statement.

Declaration

IGraphStatement SetGraphSourceAnalytics()

Returns

Type	Description
IGraphStatement

SetGraphWriteConsistencyLevel(ConsistencyLevel)

Sets the consistency level used for the graph write query.

This setting will override the consistency level set with SetConsistencyLevel(ConsistencyLevel) only for the WRITE part of the graph query.

Declaration

IGraphStatement SetGraphWriteConsistencyLevel(ConsistencyLevel consistency)

Parameters

Type	Name	Description
ConsistencyLevel	consistency

Returns

Type	Description
IGraphStatement

SetReadTimeoutMillis(Int32)

Sets the per-host read timeout in milliseconds for this statement.

Use System.Threading.Timeout.Infinite to disable timeouts for this Statement.

Use zero to use the default value specified in the ReadTimeoutMillis.

Declaration

IGraphStatement SetReadTimeoutMillis(int timeout)

Parameters

Type	Name	Description
System.Int32	timeout	Timeout in milliseconds.

Returns

Type	Description
IGraphStatement	This instance

SetSystemQuery()

Forces this statement to use no graph name, even if a default graph name was defined with SetName(String).

If a graph name was previously defined on this statement, it will be reset.

Declaration

IGraphStatement SetSystemQuery()

Returns

Type	Description
IGraphStatement

SetTimestamp(DateTimeOffset)

Sets the timestamp associated with this query.

Declaration

IGraphStatement SetTimestamp(DateTimeOffset timestamp)

Parameters

Type	Name	Description
System.DateTimeOffset	timestamp

Returns

Type	Description
IGraphStatement

ToIStatement(GraphOptions)

Returns the IStatement representation of the Graph statement.

Declaration

IStatement ToIStatement(GraphOptions options)

Parameters

Type	Name	Description
GraphOptions	options

Returns

Type	Description
IStatement

Remarks

Used by the DSE driver to translate between this statement and Core driver statement instances