fix:修复Oracle输出SQL时游标参数缺失的BUG

core/src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java

@@ -2955,4 +2955,117 @@ public boolean visit(OracleCreateTableSpaceStatement x) {
         print0(ucase ? x.getSql().toUpperCase() : x.getSql().toLowerCase());
         return false;
     }
+
+    public void visitCursorParameters(List<SQLParameter> cursorParameters) {
+        for (SQLParameter cursorParameter : cursorParameters) {
+            print('(');
+            cursorParameter.getName().accept(this);
+            print(' ');
+            cursorParameter.getDataType().accept(this);
+            print(')');
+        }
+    }
+
+    @Override
+    public boolean visit(SQLParameter x) {
+        SQLName name = x.getName();
+        if (x.getDataType().getName().equalsIgnoreCase("CURSOR")) {
+            print0(ucase ? "CURSOR " : "cursor ");
+            x.getName().accept(this);
+            // Handling cursor parameters
+            visitCursorParameters(x.getCursorParameters());
+            print0(ucase ? " IS" : " is");
+            this.indentCount++;
+            println();
+            SQLSelect select = ((SQLQueryExpr) x.getDefaultValue()).getSubQuery();
+            select.accept(this);
+            this.indentCount--;
+
+        } else {
+            if (x.isMap()) {
+                print0(ucase ? "MAP MEMBER " : "map member ");
+            } else if (x.isOrder()) {
+                print0(ucase ? "ORDER MEMBER " : "order member ");
+            } else if (x.isMember()) {
+                print0(ucase ? "MEMBER " : "member ");
+            }
+            SQLDataType dataType = x.getDataType();
+
+            if (DbType.oracle == dbType
+                    || dataType instanceof OracleFunctionDataType
+                    || dataType instanceof OracleProcedureDataType) {
+                if (dataType instanceof OracleFunctionDataType) {
+                    OracleFunctionDataType functionDataType = (OracleFunctionDataType) dataType;
+                    visit(functionDataType);
+                    return false;
+                }
+
+                if (dataType instanceof OracleProcedureDataType) {
+                    OracleProcedureDataType procedureDataType = (OracleProcedureDataType) dataType;
+                    visit(procedureDataType);
+                    return false;
+                }
+
+                String dataTypeName = dataType.getName();
+                boolean printType = (dataTypeName.startsWith("TABLE OF") && x.getDefaultValue() == null)
+                        || dataTypeName.equalsIgnoreCase("REF CURSOR")
+                        || dataTypeName.startsWith("VARRAY(");
+                if (printType) {
+                    print0(ucase ? "TYPE " : "type ");
+                }
+
+                //枚举类型特殊处理
+                if ("ENUM".equals(dataTypeName)) {
+                    dataType.accept(this);
+                    return false;
+                } else {
+                    name.accept(this);
+                }
+                if (x.getParamType() == SQLParameter.ParameterType.IN) {
+                    print0(ucase ? " IN " : " in ");
+                } else if (x.getParamType() == SQLParameter.ParameterType.OUT) {
+                    print0(ucase ? " OUT " : " out ");
+                } else if (x.getParamType() == SQLParameter.ParameterType.INOUT) {
+                    print0(ucase ? " IN OUT " : " in out ");
+                } else {
+                    print(' ');
+                }
+
+                if (x.isNoCopy()) {
+                    print0(ucase ? "NOCOPY " : "nocopy ");
+                }
+
+                if (x.isConstant()) {
+                    print0(ucase ? "CONSTANT " : "constant ");
+                }
+
+                if (printType) {
+                    print0(ucase ? "IS " : "is ");
+                }
+            } else {
+                if (x.getParamType() == SQLParameter.ParameterType.IN) {
+                    boolean skip = DbType.mysql == dbType
+                            && x.getParent() instanceof SQLCreateFunctionStatement;
+
+                    if (!skip) {
+                        print0(ucase ? "IN " : "in ");
+                    }
+                } else if (x.getParamType() == SQLParameter.ParameterType.OUT) {
+                    print0(ucase ? "OUT " : "out ");
+                } else if (x.getParamType() == SQLParameter.ParameterType.INOUT) {
+                    print0(ucase ? "INOUT " : "inout ");
+                }
+                x.getName().accept(this);
+                print(' ');
+            }
+
+            dataType.accept(this);
+            if (x.isNotNull()) {
+                print0(ucase ? " NOT NULL" : " not null");
+            }
+            printParamDefaultValue(x);
+        }
+
+        return false;
+    }
 }

core/src/test/java/com/alibaba/druid/demo/sql/OracleCursorParamTest.java

@@ -0,0 +1,26 @@
+package com.alibaba.druid.demo.sql;
+
+import com.alibaba.druid.DbType;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import junit.framework.TestCase;
+
+/**
+ * @author LENOVO
+ * @date 2024/7/17 10:56
+ */
+public class OracleCursorParamTest extends TestCase {
+
+    public void test_cursor_parameters() {
+        String sql = "DECLARE\n" +
+                "CURSOR cur_param(name_str VARCHAR2) IS SELECT u.USERNAME, u.PASSWORD FROM MG_USER u WHERE ID = 1;\n" +
+                "op_name VARCHAR2(100);\n" +
+                "BEGIN\n" +
+                "SELECT NVL(EMP_NAME, USERNAME) INTO op_name FROM MG_USER WHERE ID = 1;\n" +
+                "END;";
+
+        SQLStatement stmt = SQLUtils.parseSingleStatement(sql, DbType.oracle);
+
+        System.out.println(stmt);
+    }
+}