Enum Class BedrockGuardContentPlacement

java.lang.Object

java.lang.Enum<BedrockGuardContentPlacement>

dev.langchain4j.model.bedrock.BedrockGuardContentPlacement

All Implemented Interfaces:

Serializable, Comparable<BedrockGuardContentPlacement>, Constable

public enum BedrockGuardContentPlacement
extends Enum<BedrockGuardContentPlacement>

Defines which user messages a Bedrock guardrail evaluates as input.

By default, a guardrail configured via BedrockGuardrailConfiguration evaluates the text of all user and AI messages in the request. When a placement is set, the selected user messages are wrapped in Bedrock Converse guardContent blocks, and the guardrail evaluates only those blocks as input: other user messages and AI messages are not evaluated. The model response is still evaluated. This reduces cost and latency, but content outside the selected messages is not checked. For example, with LAST_USER_MESSAGE and chat memory, a user message that the guardrail blocked is sent to the model without evaluation on later turns.

Bedrock never evaluates tool results, tool definitions, tool calls or a system prompt, with or without a placement.

Only text and PNG/JPEG images can be wrapped. If a selected message contains other content (for example, a PDF or a GIF image), the placement is ignored for that request, the guardrail evaluates all user and AI messages as by default, and a warning is logged. The same default applies when the request contains no user message.

See Also:

• Use a guardrail with the Converse API

Nested Class Summary

Nested classes/interfaces inherited from class Enum

Enum.EnumDesc<E>

Enum Constant Summary

Enum Constants

Enum Constant	Description
ALL_USER_MESSAGES	The guardrail evaluates only the user messages, all of them.
LAST_USER_MESSAGE	The guardrail evaluates only the last user message.

Method Summary

Modifier and Type	Method	Description
static BedrockGuardContentPlacement	valueOf(String name)	Returns the enum constant of this class with the specified name.
static BedrockGuardContentPlacement[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

LAST_USER_MESSAGE

public static final BedrockGuardContentPlacement LAST_USER_MESSAGE

The guardrail evaluates only the last user message.

ALL_USER_MESSAGES

public static final BedrockGuardContentPlacement ALL_USER_MESSAGES

The guardrail evaluates only the user messages, all of them.

Method Details

values

public static BedrockGuardContentPlacement[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static BedrockGuardContentPlacement valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null