# Environment Variables

/// tip

If you already know what "environment variables" are and how to use them, feel free to skip this.

///

An environment variable (also known as "**env var**") is a variable that lives **outside** of the Python code, in the **operating system**, and could be read by your Python code (or by other programs as well).

    #
    #; isTableSqlNameUpperCase = false
    # - - - - - - - - - -/

    # /- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    # o isColumnSqlNameUpperCase: (NotRequired - Default false)
    #   [true]
    #     Column names on SQL executed by condition-bean or behavior
    #     are forcedly treated as upper case. (except outside-SQL)
    #

  internal const val B0_FLAG_RSV2 = 32

  /** Byte 0 reserved flag 3. Must be 0 unless negotiated otherwise. */
  internal const val B0_FLAG_RSV3 = 16

  /** Byte 0 mask for the frame opcode. */
  internal const val B0_MASK_OPCODE = 15

  /** Flag in the opcode which indicates a control frame. */
  internal const val OPCODE_FLAG_CONTROL = 8

  /**
   * Byte 1 flag for whether the payload data is masked.
   *

  @Throws(IOException::class)
  private fun writeControlFrame(
    opcode: Int,
    payload: ByteString,
  ) {
    if (writerClosed) throw IOException("closed")

    val length = payload.size
    require(length <= PAYLOAD_BYTE_MAX) {
      "Payload size must be less than or equal to $PAYLOAD_BYTE_MAX"
    }

    val b0 = B0_FLAG_FIN or opcode
    sinkBuffer.writeByte(b0)

    var b1 = length

    protected
    fun assertChangesProperlyOrdered() {
        val result = run(":verifyAcceptedApiChangesOrdering").build()
        Assertions.assertEquals(TaskOutcome.SUCCESS, result.task(":verifyAcceptedApiChangesOrdering")!!.outcome)
    }

    protected
    fun assertHasMisorderedChanges(changes: List<Change>? = null) {
        val standardError = StringWriter()
        run(":verifyAcceptedApiChangesOrdering")

  // with any Kubernetes object. It allows autoscaling based on information
  // coming from components running outside of cluster
  // (for example length of queue in cloud messaging service, or
  // QPS from loadbalancer running outside of cluster).
  // +optional
  optional ExternalMetricSource external = 5;
}

// MetricStatus describes the last-read state of a single metric.

ComponentConfigurator to initialize fields in a Plexus component. Typically this is done within Plexus with the configuration supplied with component configuration, but in Maven we take configuration values from the POM. So we have to use the ComponentConfigurator outside of Plexus in order to configure the Maven Mojo which is just a Plexus component. We can use the information from the MojoDescriptor along with the merged configuration information that is now present in the POM to create the complete PlexusConfiguration...

    public void setOtherProperty(String s) ...

    // NOTE: No direct implementation of getSomeProperty
}
```

This is acceptable when the implementation type is public and/or has been extended by something outside gradle/gradle:

```groovy
public interface ExistingThing {
    String getOtherProperty()
    void setOtherProperty(String s)

    Property<String> getSomeProperty()
}

## Status

ACCEPTED

## Consequences

* The configuration cache serialization infrastructure should be used for all serialization.
* Existing usages of Serializer outside of this infrastructure should be migrated to use it.
* Existing usages of Java serialization should be migrated to use it.
* It is ok for Serializer to be used as a replacement for Java serialization as a migration step.

/**
 * The subject-generator interface accepted by Collection testers, for testing a Collection at one
 * particular {@link CollectionSize}.
 *
 * <p>This interface should not be implemented outside this package; {@link
 * PerCollectionSizeTestSuiteBuilder} constructs instances of it from a more general {@link
 * TestCollectionGenerator}.
 *
 * @author George van den Driessche
 */
@GwtCompatible