{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "generate_java_code",
  "type": "object",
  "required": [
    "db_connection",
    "generation_config"
  ],
  "properties": {
    "db_connection": {
      "type": "object",
      "required": [
        "db_type",
        "url",
        "user",
        "pass"
      ],
      "properties": {
        "db_type": {
          "type": "string",
          "enum": [
            "mysql",
            "postgresql",
            "oracle",
            "sqlserver"
          ]
        },
        "url": {
          "type": "string",
          "minLength": 1
        },
        "user": {
          "type": "string",
          "minLength": 1
        },
        "pass": {
          "type": "string",
          "minLength": 1
        },
        "driver_jar": {
          "type": "string",
          "description": "Optional absolute path to JDBC driver jar"
        },
        "driver_class": {
          "type": "string",
          "description": "Optional JDBC driver class name"
        }
      },
      "additionalProperties": false
    },
    "generation_config": {
      "type": "object",
      "required": [
        "table_names",
        "author",
        "base_package",
        "template_group"
      ],
      "properties": {
        "table_names": {
          "type": "array",
          "items": {
            "type": "string",
            "minLength": 1
          },
          "minItems": 1
        },
        "author": {
          "type": "string",
          "minLength": 1
        },
        "base_package": {
          "type": "string",
          "pattern": "^[a-zA-Z_][a-zA-Z0-9_]*(\\.[a-zA-Z_][a-zA-Z0-9_]*)*$"
        },
        "template_group": {
          "type": "string",
          "enum": [
            "MyBatisPlus",
            "Custom-V2",
            "Custom-V3"
          ]
        },
        "project_root": {
          "type": "string"
        },
        "output_root": {
          "type": "string",
          "default": "src/main/java"
        },
        "project_format_command": {
          "oneOf": [
            {
              "type": "string"
            },
            {
              "type": "array",
              "items": {
                "type": "string"
              }
            }
          ],
          "description": "Optional formatter command(s) executed in project_root after generation, e.g. './gradlew spotlessApply'"
        },
        "type_mapping": {
          "type": "object",
          "description": "Optional JDBC to Java type preference overrides",
          "properties": {
            "number_default": {
              "type": "string",
              "enum": [
                "Long",
                "BigDecimal"
              ],
              "default": "Long"
            },
            "time_default": {
              "type": "string",
              "enum": [
                "Date",
                "LocalDateTime"
              ],
              "default": "Date"
            }
          },
          "additionalProperties": false
        },
        "table_columns": {
          "type": "object",
          "description": "Optional per-table column metadata for full Velocity rendering",
          "additionalProperties": {
            "type": "array",
            "items": {
              "type": "object",
              "properties": {
                "name": {
                  "type": "string"
                },
                "comment": {
                  "type": "string"
                },
                "type": {
                  "type": "string"
                },
                "java_type": {
                  "type": "string"
                },
                "short_type": {
                  "type": "string"
                },
                "sql_type": {
                  "type": "string"
                },
                "is_pk": {
                  "type": "boolean"
                }
              },
              "required": [
                "name"
              ]
            }
          }
        }
      },
      "additionalProperties": false
    }
  },
  "additionalProperties": false
}