LiteFlow supports 3 configuration types

• xml
• json
• yml

json, yml, and xml are all configured similarly and will not increase your extra learning burden. Only the form is different.

tip

In the following chapters, the examples are basically performed in xml configuration. If you want to change to json and yml, you can refer to the configuration template given in this chapter.

The part of the rule

LiteFlow's rule files are very lightweight and easy to use. Mainly consists of Node and Chain.

tip

It must be noted that Node is not necessary in the Springboot/Spring environment system, as long as the corresponding component is registered in the context. Of course, if configured in the rules file, the framework will also register the node with the Spring context.

In non-Spring environments, Node is required. If Node is not configured, the system will report an error that the node cannot be found. Be sure to pay attention to this.

The following format is only used as a template for users' reference.

XML configuration example in three modes

The configuration of rule-source in xml form is as follows:

Local file:liteflow.rule-source=config/flow.el.xml

Custom configuration source:liteflow.rule-source=el_xml:com.yomahub.liteflow.test.TestCustomParser

<?xml version="1.0" encoding="UTF-8"?>
<flow>
    <nodes>
        <node id="a" class="com.yomahub.liteflow.test.parser.cmp.ACmp"/>
        <node id="b" class="com.yomahub.liteflow.test.parser.cmp.BCmp"/>
        <node id="c" class="com.yomahub.liteflow.test.parser.cmp.CCmp"/>
        <node id="d" class="com.yomahub.liteflow.test.parser.cmp.DCmp"/>
    </nodes>

    <chain name="chain1">
        THEN(
            a, b, WHEN(c,d)
        );
    </chain>
</flow>

JSON configuration example in three modes

The configuration of rule-source in json form is as follows:

Local file:liteflow.rule-source=config/flow.el.json

Custom configuration source:liteflow.rule-source=el_json:com.yomahub.liteflow.test.TestCustomParser

{
  "flow": {
    "nodes": {
      "node": [
        {
          "id": "a",
          "class": "com.yomahub.liteflow.test.parser.cmp.ACmp"
        },
        {
          "id": "b",
          "class": "com.yomahub.liteflow.test.parser.cmp.BCmp"
        },
        {
          "id": "c",
          "class": "com.yomahub.liteflow.test.parser.cmp.CCmp"
        },
        {
          "id": "d",
          "class": "com.yomahub.liteflow.test.parser.cmp.DCmp"
        }
      ]
    },
    "chain": [
      {
        "name": "chain1",
        "value": "THEN(a, b, WHEN(c, d))"
      }
    ]
  }
}

YAML configuration example in three modes

The configuration of rule-source in yaml form is as follows:

Local file:liteflow.rule-source=config/flow.el.yml

Custom configuration source:liteflow.rule-source=el_yml:com.yomahub.liteflow.test.TestCustomParser

flow:
  nodes:
    node:
      - id: a
        class: com.yomahub.liteflow.test.parser.cmp.ACmp
      - id: b
        class: com.yomahub.liteflow.test.parser.cmp.BCmp
      - id: c
        class: com.yomahub.liteflow.test.parser.cmp.CCmp
      - id: d
        class: com.yomahub.liteflow.test.parser.cmp.DCmp
  chain:
    - name: chain1
      value: "THEN(a, b, WHEN(c, d))"

// Make sure to add code blocks to your code group