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Prompt.java
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Prompt.java
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/*
* Copyright 2023 - 2024 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.ai.chat.prompt;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import org.springframework.ai.chat.messages.AssistantMessage;
import org.springframework.ai.chat.messages.FunctionMessage;
import org.springframework.ai.chat.messages.Message;
import org.springframework.ai.chat.messages.SystemMessage;
import org.springframework.ai.chat.messages.UserMessage;
import org.springframework.ai.model.ModelRequest;
/**
* The Prompt class represents a prompt used in AI model requests. A prompt consists of
* one or more messages and additional chat options.
*
* @author Mark Pollack
* @author luocongqiu
*/
public class Prompt implements ModelRequest<List<Message>> {
private final List<Message> messages;
private ChatOptions chatOptions;
public Prompt(String contents) {
this(new UserMessage(contents));
}
public Prompt(Message message) {
this(Collections.singletonList(message));
}
public Prompt(List<Message> messages) {
this.messages = messages;
}
public Prompt(String contents, ChatOptions chatOptions) {
this(new UserMessage(contents), chatOptions);
}
public Prompt(Message message, ChatOptions chatOptions) {
this(Collections.singletonList(message), chatOptions);
}
public Prompt(List<Message> messages, ChatOptions chatOptions) {
this.messages = messages;
this.chatOptions = chatOptions;
}
public String getContents() {
StringBuilder sb = new StringBuilder();
for (Message message : getInstructions()) {
sb.append(message.getContent());
}
return sb.toString();
}
@Override
public ChatOptions getOptions() {
return this.chatOptions;
}
@Override
public List<Message> getInstructions() {
return this.messages;
}
@Override
public String toString() {
return "Prompt{" + "messages=" + this.messages + ", modelOptions=" + this.chatOptions + '}';
}
@Override
public boolean equals(Object o) {
if (this == o)
return true;
if (!(o instanceof Prompt prompt))
return false;
return Objects.equals(this.messages, prompt.messages) && Objects.equals(this.chatOptions, prompt.chatOptions);
}
@Override
public int hashCode() {
return Objects.hash(this.messages, this.chatOptions);
}
public Prompt copy() {
return new Prompt(instructionsCopy(), this.chatOptions);
}
private List<Message> instructionsCopy() {
List<Message> messagesCopy = new ArrayList<>();
this.messages.forEach(message -> {
if (message instanceof UserMessage) {
messagesCopy.add(new UserMessage(message.getContent(), message.getMedia(), message.getMetadata()));
}
else if (message instanceof SystemMessage) {
messagesCopy.add(new SystemMessage(message.getContent()));
}
else if (message instanceof AssistantMessage) {
messagesCopy.add(new AssistantMessage(message.getContent(), message.getMetadata()));
}
else if (message instanceof FunctionMessage) {
messagesCopy.add(new FunctionMessage(message.getContent(), message.getMetadata()));
}
else {
throw new IllegalArgumentException("Unsupported message type: " + message.getClass().getName());
}
});
return messagesCopy;
}
}