bug #IADIXE [bug]使用迭代循环组件，下游getCurrLoopObj()获取为null

liteflow-core/src/main/java/com/yomahub/liteflow/builder/el/LiteFlowChainELBuilder.java

@@ -26,8 +26,10 @@ import com.yomahub.liteflow.property.LiteflowConfigGetter;
 import com.yomahub.liteflow.util.ElRegexUtil;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Objects;
+import java.util.function.Consumer;
 
 /**
  * Chain基于代码形式的组装器 EL表达式规则专属组装器
@@ -372,6 +374,21 @@ public class LiteFlowChainELBuilder {
 			// 放入当前主chain的ID
 			context.put(ChainConstant.CURR_CHAIN_ID, chain.getChainId());
 
+
+			// 只有当PARSE_ONE_ON_FIRST_EXEC时才会执行这个方法
+			// 那么会有一种级联的情况：这个EL中含有其他的chain，如果这时候不先解析其他chain，就到导致诸如循环场景无法设置index或者obj的情况
+			// 所以这里要判断表达式里有没有其他的chain，如果有，进行先行解析
+
+			String[] itemArray = EXPRESS_RUNNER.getOutVarNames(chain.getEl());
+			Arrays.stream(itemArray).forEach(item -> {
+                if (FlowBus.containChain(item)){
+					Chain itemChain = FlowBus.getChain(item);
+					if (!itemChain.isCompiled()){
+						buildUnCompileChain(FlowBus.getChain(item));
+					}
+                }
+            });
+
 			// 解析el成为一个Condition
 			// 为什么这里只是一个Condition，而不是一个List<Condition>呢
 			// 这里无论多复杂的，外面必定有一个最外层的Condition，所以这里只有一个，内部可以嵌套很多层，这点和以前的不太一样

liteflow-testcase-el/liteflow-testcase-el-springboot/src/test/java/com/yomahub/liteflow/test/iterator/IteratorCase_IADIXE.java

@@ -0,0 +1,35 @@
+package com.yomahub.liteflow.test.iterator;
+
+import cn.hutool.core.collection.ListUtil;
+import com.yomahub.liteflow.core.FlowExecutor;
+import com.yomahub.liteflow.flow.LiteflowResponse;
+import com.yomahub.liteflow.slot.DefaultContext;
+import com.yomahub.liteflow.test.BaseTest;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.test.context.TestPropertySource;
+
+import javax.annotation.Resource;
+import java.util.List;
+
+@TestPropertySource(value = "classpath:/iterator/application_IADIXE.properties")
+@SpringBootTest(classes = IteratorCase_IADIXE.class)
+@EnableAutoConfiguration
+@ComponentScan({ "com.yomahub.liteflow.test.iterator.cmp" })
+public class IteratorCase_IADIXE extends BaseTest {
+
+    @Resource
+    private FlowExecutor flowExecutor;
+
+    // 最简单的情况
+    @Test
+    public void testIt1() throws Exception {
+        List<String> list = ListUtil.toList("1", "2", "3");
+        LiteflowResponse response = flowExecutor.execute2Resp("chain1", list);
+        Assertions.assertTrue(response.isSuccess());
+    }
+
+}

liteflow-testcase-el/liteflow-testcase-el-springboot/src/test/java/com/yomahub/liteflow/test/iterator/cmp/DCmp.java

@@ -0,0 +1,14 @@
+
+package com.yomahub.liteflow.test.iterator.cmp;
+
+import com.yomahub.liteflow.core.NodeComponent;
+import org.springframework.stereotype.Component;
+
+@Component("d")
+public class DCmp extends NodeComponent {
+
+	@Override
+	public void process() throws Exception {
+		System.out.println(this.getCurrLoopObj().toString());
+	}
+}

liteflow-testcase-el/liteflow-testcase-el-springboot/src/test/resources/iterator/application_IADIXE.properties

@@ -0,0 +1,2 @@
+liteflow.rule-source=iterator/flow_IADIXE.xml
+liteflow.parse-mode=PARSE_ONE_ON_FIRST_EXEC

liteflow-testcase-el/liteflow-testcase-el-springboot/src/test/resources/iterator/flow_IADIXE.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE flow PUBLIC  "liteflow" "liteflow.dtd">
+<flow>
+    <chain name="chain1">
+        ITERATOR(it).DO(chain2);
+    </chain>
+
+    <chain name="chain2">
+        THEN(c,d);
+    </chain>
+
+</flow>