优化：依赖表达式expr字段 改为dependExpr

smtweb-framework/bpm/src/main/java/cc/smtweb/system/bpm/web/design/form/ModelFormHelper.java

@@ -230,7 +230,7 @@ public class ModelFormHelper {
             field.put("linkDb", pdf.linkDb);
             field.put("linkField", pdf.linkField);
             field.put("value", pdf.value);
-            field.put("expr", pdf.expr);
+            field.put("dependExpr", pdf.dependExpr);
             field.put("defValue", pdf.defValue);
             if (!isField) {
                 PageDatasetFilter filter = (PageDatasetFilter) pdf;

smtweb-framework/bpm/src/main/java/cc/smtweb/system/bpm/web/design/form/define/BaseDatasetField.java

@@ -41,7 +41,7 @@ public class BaseDatasetField {
     // 默认值
     public String defValue;
     // type为depend时, 表达式
-    public String expr;
+    public String dependExpr;
     @JsonIgnore
     public boolean isFieldNotNull() {
         return notNull == 1;