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d8959ef854- Change CallToolResult.structuredContent type from Map<String,Object> to Object to support both objects and arrays - Update JsonSchemaValidator to validate any Object type, not just Maps - Add test cases for array-type structured output validation - Fix type casting in existing tests to handle the more generic Object type - Deprecate CallToolResult constructors in favor of builder pattern - Update server implementations to use CallToolResult builder This allows tools to return arrays as structured content, not just objects, which is required by the MCP specification for tools with array-type output schemas. It is realated to MPC spec fix: https://github.com/modelcontextprotocol/modelcontextprotocol/issues/834 Fixes #550 BREAKING CHANGE! Migration Guide: ---------------- 1. If you're accessing CallToolResult.structuredContent(): - Add explicit casting when you know it's a Map: Before: result.structuredContent().get("key") After: ((Map<String,Object>) result.structuredContent()).get("key") - Or check the type first: if (result.structuredContent() instanceof Map) { Map<String,Object> map = (Map<String,Object>) result.structuredContent(); // use map } else if (result.structuredContent() instanceof List) { List<?> list = (List<?>) result.structuredContent(); // use list } 2. If you're creating CallToolResult instances: - Switch to using the builder pattern: Before: new CallToolResult(content, isError, structuredContent) After: CallToolResult.builder() .content(content) .isError(isError) .structuredContent(structuredContent) .build() 3. If you're implementing JsonSchemaValidator: - Update your validate() method signature: Before: validate(Map<String,Object> schema, Map<String,Object> structuredContent) After: validate(Map<String,Object> schema, Object structuredContent) Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com> |
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Java MCP SDK
Java SDK implementation of the Model Context Protocol, enabling seamless integration with language models and AI tools. For comprehensive guides and API documentation, visit the MCP Java SDK Reference Documentation.