com.ing.data.cassandra.jdbc.metadata

Class BasicVersionedMetadata

java.lang.Object

com.ing.data.cassandra.jdbc.metadata.BasicVersionedMetadata

All Implemented Interfaces:

VersionedMetadata

public class BasicVersionedMetadata
extends Object
implements VersionedMetadata

A basic implementation of a versioned database metadata.

See Also:

VersionedMetadata, BuiltInFunctionsMetadataBuilder

Constructor Summary

Constructors

Constructor and Description
BasicVersionedMetadata(String metadataName) Constructs a database metadata valid in any version of Cassandra.
BasicVersionedMetadata(String metadataName, Function<CassandraConnection,Boolean> additionalCondition) Constructs a database metadata valid from the specified version of Cassandra and verifying a specific condition for the current connection.
BasicVersionedMetadata(String metadataName, String validFrom) Constructs a database metadata valid from the specified version of Cassandra.
BasicVersionedMetadata(String metadataName, String validFrom, Function<CassandraConnection,Boolean> additionalCondition) Constructs a database metadata valid from the specified version of Cassandra and verifying a specific condition for the current connection.
BasicVersionedMetadata(String metadataName, String validFrom, String invalidFrom) Constructs a database metadata valid in the specified range of Cassandra versions.
BasicVersionedMetadata(String metadataName, String validFrom, String invalidFrom, Function<CassandraConnection,Boolean> additionalCondition) Constructs a database metadata valid in the specified range of Cassandra versions and verifying a specific condition for the current connection.

Method Summary

Modifier and Type	Method and Description
boolean	fulfillAdditionalCondition(CassandraConnection connection) Checks if the connection to the database fulfills some specific conditions defined in the implementation of VersionedMetadata.
String	getName() Gets the metadata name (for example a CQL keyword, or a built-in function name).
org.semver4j.Semver	isInvalidFrom() Gets the first Cassandra version in which the metadata does not exist anymore.
org.semver4j.Semver	isValidFrom() Gets the minimal Cassandra version from which the metadata exists.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BasicVersionedMetadata

public BasicVersionedMetadata(String metadataName,
                              String validFrom,
                              String invalidFrom,
                              Function<CassandraConnection,Boolean> additionalCondition)

Constructs a database metadata valid in the specified range of Cassandra versions and verifying a specific condition for the current connection.

Parameters:

metadataName - The metadata name (a built-in function name for example).

validFrom - The minimal Cassandra version from which the metadata exists. If null, we consider the metadata exists in any version of the Cassandra database.

invalidFrom - The first Cassandra version in which the metadata does not exist anymore. If null, we consider the metadata exists in any version of the Cassandra database greater than validFrom.

additionalCondition - An additional condition to verify on the current connection to the database.

BasicVersionedMetadata

public BasicVersionedMetadata(String metadataName,
                              String validFrom,
                              String invalidFrom)

Constructs a database metadata valid in the specified range of Cassandra versions.

Parameters:

metadataName - The metadata name (a built-in function name for example).

validFrom - The minimal Cassandra version from which the metadata exists. If null, we consider the metadata exists in any version of the Cassandra database.

invalidFrom - The first Cassandra version in which the metadata does not exist anymore. If null, we consider the metadata exists in any version of the Cassandra database greater than validFrom.

BasicVersionedMetadata

public BasicVersionedMetadata(String metadataName,
                              String validFrom,
                              Function<CassandraConnection,Boolean> additionalCondition)

Constructs a database metadata valid from the specified version of Cassandra and verifying a specific condition for the current connection.

Parameters:

metadataName - The metadata name (a built-in function name for example).

validFrom - The minimal Cassandra version from which the metadata exists.

additionalCondition - An additional condition to verify on the current connection to the database.

BasicVersionedMetadata

public BasicVersionedMetadata(String metadataName,
                              String validFrom)

Constructs a database metadata valid from the specified version of Cassandra.

Parameters:

metadataName - The metadata name (a built-in function name for example).

validFrom - The minimal Cassandra version from which the metadata exists.

BasicVersionedMetadata

public BasicVersionedMetadata(String metadataName,
                              Function<CassandraConnection,Boolean> additionalCondition)

Constructs a database metadata valid from the specified version of Cassandra and verifying a specific condition for the current connection.

Parameters:

metadataName - The metadata name (a built-in function name for example).

additionalCondition - An additional condition to verify on the current connection to the database.

BasicVersionedMetadata

public BasicVersionedMetadata(String metadataName)

Constructs a database metadata valid in any version of Cassandra.

Parameters:

metadataName - The metadata name (a built-in function name for example).

Method Detail

getName

public String getName()

Description copied from interface: VersionedMetadata

Gets the metadata name (for example a CQL keyword, or a built-in function name).

Specified by:

getName in interface VersionedMetadata

Returns:

The metadata name.

isValidFrom

public org.semver4j.Semver isValidFrom()

Description copied from interface: VersionedMetadata

Gets the minimal Cassandra version from which the metadata exists. If null, we consider the metadata always existed.

Specified by:

isValidFrom in interface VersionedMetadata

Returns:

The minimal version of Cassandra from which the metadata exists or null.

isInvalidFrom

public org.semver4j.Semver isInvalidFrom()

Description copied from interface: VersionedMetadata

Gets the first Cassandra version in which the metadata does not exist anymore. If null, it means the metadata still exists in the latest version of Cassandra.

Specified by:

isInvalidFrom in interface VersionedMetadata

Returns:

The first version of Cassandra in which the metadata does not exist anymore or null.

fulfillAdditionalCondition

public boolean fulfillAdditionalCondition(CassandraConnection connection)

Description copied from interface: VersionedMetadata

Checks if the connection to the database fulfills some specific conditions defined in the implementation of VersionedMetadata.

Specified by:

fulfillAdditionalCondition in interface VersionedMetadata

Parameters:

connection - The connection to the database.

Returns:

true if the additional condition is verified by the connection, false otherwise.