org.firebirdsql.gds

## Class ParameterBufferHelper

- java.lang.Object
- - org.firebirdsql.gds.ParameterBufferHelper

-     public class ParameterBufferHelper
      extends java.lang.Object

  This class maps the extended JDBC properties to parameter buffer types (for transaction and database parameter buffers). It uses `java.lang.reflection` to determine correct type of the parameter passed to the `Driver.connect(String, Properties)` method.
  Version:
    1.0
  Author:
    Roman Rokytskyy, Mark Rotteveel

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class and Description
    --- | ---
    `static class` | `ParameterBufferHelper.DpbParameterType` Dpb type, which is the name, the key for the dpb and its value type.
    `static class` | `ParameterBufferHelper.DpbValueType` Enum with the various Dpb value types, and conversion from String to that type.

  - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static java.lang.String` | `DPB_PREFIX`
    `static java.lang.String` | `ISC_DPB_TYPES_RESOURCE`
    `static java.lang.String` | `TPB_PREFIX`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `ParameterBufferHelper()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static java.lang.Integer` | `getDpbKey(java.lang.String name)` Get integer value of the DPB key corresponding to the specified name.
    `static java.util.Map<java.lang.String,java.lang.Integer>` | `getDpbMap()` Get mapping between DPB names and their keys.
    `static ParameterBufferHelper.DpbParameterType` | `getDpbParameterType(java.lang.String name)` Gets the `ParameterBufferHelper.DpbParameterType` for the specified dpb item name (short or long)
    `static java.lang.Integer` | `getTpbParam(java.lang.String name)` Get value of TPB parameter for the specified name.
    `static java.lang.Object` | `parseDpbString(java.lang.String name, java.lang.Object value)`

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

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

- - ### Field Detail

    - #### DPB_PREFIX

          public static final java.lang.String DPB_PREFIX

      See Also:
        Constant Field Values

    - #### TPB_PREFIX

          public static final java.lang.String TPB_PREFIX

      See Also:
        Constant Field Values

    - #### ISC_DPB_TYPES_RESOURCE

          public static final java.lang.String ISC_DPB_TYPES_RESOURCE

      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### ParameterBufferHelper

          public ParameterBufferHelper()

  - ### Method Detail

    - #### getDpbKey

          public static java.lang.Integer getDpbKey(java.lang.String name)

      Get integer value of the DPB key corresponding to the specified name.
      Parameters:
        `name` - name of the key.
      Returns:
        instance of `Integer` corresponding to the specified name or `null` if value is not known.

    - #### getDpbParameterType

          public static ParameterBufferHelper.DpbParameterType getDpbParameterType(java.lang.String name)

      Gets the `ParameterBufferHelper.DpbParameterType` for the specified dpb item name (short or long)
      Parameters:
        `name` - Name of the dpb item
      Returns:
        `DpbParameterType` instance, or `null` if there is no item with this name

    - #### getDpbMap

          public static java.util.Map<java.lang.String,java.lang.Integer> getDpbMap()

      Get mapping between DPB names and their keys.
      Returns:
        instance of `Map`, where key is the name of DPB parameter, value is its DPB key.

    - #### parseDpbString

          public static java.lang.Object parseDpbString(java.lang.String name,
                                        java.lang.Object value)

    - #### getTpbParam

          public static java.lang.Integer getTpbParam(java.lang.String name)

      Get value of TPB parameter for the specified name. This method tries to match string representation of the TPB parameter with its value.
      Parameters:
        `name` - string representation of TPB parameter, can have "isc_tpb_" prefix.
      Returns:
        value corresponding to the specified parameter name or null if nothing was found.

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