org.firebirdsql.gds.ng.wire

## Class AbstractProtocolDescriptor

- java.lang.Object
- - org.firebirdsql.gds.ng.wire.AbstractProtocolDescriptor

- All Implemented Interfaces:
    ProtocolDescriptor
  Direct Known Subclasses:
    Version10Descriptor, Version11Descriptor, Version12Descriptor, Version13Descriptor, Version15Descriptor, Version16Descriptor, Version18Descriptor

      public abstract class AbstractProtocolDescriptor
      extends java.lang.Object
      implements ProtocolDescriptor

  Abstract class to simplify implementation of `ProtocolDescriptor`
  Since:
    3.0
  Author:
    Mark Rotteveel

- - ### Constructor Summary

    Constructors
    Modifier | Constructor and Description
    --- | ---
    `protected` | `AbstractProtocolDescriptor(int version, int architecture, int minimumType, int maximumType, boolean supportsWireCompression, int weight)` Initializes the basic ProtocolDescriptor fields.

  - ### Method Summary

    All Methods Instance Methods Abstract Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `ServiceParameterBuffer` | `createAttachServiceParameterBuffer(WireServiceConnection connection)` Create an attach `ServiceParameterBuffer` implementation and populate it with supported properties for this protocol version.
    `DatabaseParameterBuffer` | `createDatabaseParameterBuffer(WireDatabaseConnection connection)` Create `DatabaseParameterBuffer` implementation and populate it with supported properties for this protocol version.
    `boolean` | `equals(java.lang.Object other)`
    `int` | `getArchitecture()`
    `int` | `getMaximumType()`
    `int` | `getMinimumType()`
    `protected abstract ParameterConverter<WireDatabaseConnection,WireServiceConnection>` | `getParameterConverter()`
    `int` | `getVersion()`
    `int` | `getWeight()`
    `int` | `hashCode()`
    `boolean` | `supportsWireCompression()`

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

    - ### Methods inherited from interface org.firebirdsql.gds.ng.wire.ProtocolDescriptor

      `createAsynchronousChannel, createBlrCalculator, createDatabase, createInputBlob, createOutputBlob, createService, createServiceParameterBuffer, createServiceRequestBuffer, createStatement, createTransaction, createWireOperations`

- - ### Constructor Detail

    - #### AbstractProtocolDescriptor

          protected AbstractProtocolDescriptor(int version,
                                               int architecture,
                                               int minimumType,
                                               int maximumType,
                                               boolean supportsWireCompression,
                                               int weight)

      Initializes the basic ProtocolDescriptor fields.
      Parameters:
        `version` - Version of the protocol
        `architecture` - Architecture of the protocol
        `minimumType` - Minimum supported protocol type
        `maximumType` - Maximum supported protocol type
        `supportsWireCompression` - `true` if this version supports zlib wire compression
        `weight` - Selection weight (higher values have higher preference)

  - ### Method Detail

    - #### getVersion

          public final int getVersion()

      Specified by:
        `getVersion` in interface `ProtocolDescriptor`
      Returns:
        The protocol version

    - #### getArchitecture

          public final int getArchitecture()

      Specified by:
        `getArchitecture` in interface `ProtocolDescriptor`
      Returns:
        Protocol architecture

    - #### getMinimumType

          public final int getMinimumType()

      Specified by:
        `getMinimumType` in interface `ProtocolDescriptor`
      Returns:
        Minimum supported protocol type

    - #### getMaximumType

          public final int getMaximumType()

      Specified by:
        `getMaximumType` in interface `ProtocolDescriptor`
      Returns:
        Maximum supported protocol type

    - #### supportsWireCompression

          public final boolean supportsWireCompression()

      Specified by:
        `supportsWireCompression` in interface `ProtocolDescriptor`
      Returns:
        `true` when zlib wire compression is supported

    - #### getWeight

          public final int getWeight()

      Specified by:
        `getWeight` in interface `ProtocolDescriptor`
      Returns:
        Preference weight

    - #### hashCode

          public final int hashCode()

      Overrides:
        `hashCode` in class `java.lang.Object`
      Returns:
        Hash code based on `version`, `architecture`, `minimumType`, `maximumType` and `weight`.

    - #### equals

          public boolean equals(java.lang.Object other)

      Default implementation for the rules described in `ProtocolDescriptor`. Returns `true` if the other object is of the exact same class as this instance.

      Overrides:
        `equals` in class `java.lang.Object`

    - #### createDatabaseParameterBuffer

          public final DatabaseParameterBuffer createDatabaseParameterBuffer(WireDatabaseConnection connection)
                                                                      throws java.sql.SQLException

      Description copied from interface: `ProtocolDescriptor`
      Create `DatabaseParameterBuffer` implementation and populate it with supported properties for this protocol version.
      Specified by:
        `createDatabaseParameterBuffer` in interface `ProtocolDescriptor`
      Parameters:
        `connection` - Connection
      Returns:
        DatabaseParameterBuffer implementation
      Throws:
        `java.sql.SQLException`

    - #### createAttachServiceParameterBuffer

          public final ServiceParameterBuffer createAttachServiceParameterBuffer(WireServiceConnection connection)
                                                                          throws java.sql.SQLException

      Description copied from interface: `ProtocolDescriptor`
      Create an attach `ServiceParameterBuffer` implementation and populate it with supported properties for this protocol version.
      Specified by:
        `createAttachServiceParameterBuffer` in interface `ProtocolDescriptor`
      Parameters:
        `connection` - Connection
      Returns:
        ServiceParameterBuffer implementation for attach
      Throws:
        `java.sql.SQLException`

    - #### getParameterConverter

          protected abstract ParameterConverter<WireDatabaseConnection,WireServiceConnection> getParameterConverter()

      Returns:
        `ParameterConverter` for populating the database parameter buffer.

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