Add File

agents-flex-core/src/main/java/com/agentsflex/core/store/condition/ExpressionAdaptor.java

@@ -0,0 +1,79 @@
+/*
+ *  Copyright (c) 2023-2025, Agents-Flex (fuhai999@gmail.com).
+ *  <p>
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *  <p>
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *  <p>
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package com.agentsflex.core.store.condition;
+
+import java.util.StringJoiner;
+
+public interface ExpressionAdaptor {
+
+    ExpressionAdaptor DEFAULT = new ExpressionAdaptor() {
+    };
+
+    default String toCondition(Condition condition) {
+        return toLeft(condition.left)
+            + toOperationSymbol(condition.type)
+            + toRight(condition.right);
+    }
+
+    default String toLeft(Operand operand) {
+        return operand.toExpression(this);
+    }
+
+    default String toOperationSymbol(ConditionType type) {
+        return type.getDefaultSymbol();
+    }
+
+    default String toRight(Operand operand) {
+        return operand.toExpression(this);
+    }
+
+    default String toValue(Condition condition, Object value) {
+        // between
+        if (condition.getType() == ConditionType.BETWEEN) {
+            Object[] values = (Object[]) value;
+            return "\"" + values[0] + "\" AND \"" + values[1] + "\"";
+        }
+
+        // in
+        else if (condition.getType() == ConditionType.IN) {
+            Object[] values = (Object[]) value;
+            StringJoiner stringJoiner = new StringJoiner(",", "(", ")");
+            for (Object v : values) {
+                if (v != null) {
+                    stringJoiner.add("\"" + v + "\"");
+                }
+            }
+            return stringJoiner.toString();
+        }
+
+        return value == null ? "" : "\"" + value + "\"";
+    }
+
+
+    default String toConnector(Connector connector) {
+        return connector.getValue();
+    }
+
+    default String toGroupStart(Group group) {
+        return "(";
+    }
+
+    default String toGroupEnd(Group group) {
+        return ")";
+    }
+
+
+}