表达式计算不支持单字符类型比较

[ccqy66]

例如，如下测试：

@Test
public void testCharcharComapre() throws Exception {
	ExpressRunner runner = new ExpressRunner();
	String express = "'a'=='a' && '9.2'>='9.2' && '2018-05-09 17:47:31'>='2018-05-09 17:47:30'";
	Boolean r = (Boolean) runner.execute(express, null, null, true, false);
	assert r == true;
}

执行报以下错误：

java.lang.Exception: run QlExpress Exception at line 1 :

	at com.ql.util.express.instruction.detail.InstructionOperator.execute(InstructionOperator.java:48)
	at com.ql.util.express.InstructionSet.executeInnerOrigiInstruction(InstructionSet.java:204)
	at com.ql.util.express.InstructionSet.excute(InstructionSet.java:170)
	at com.ql.util.express.InstructionSetRunner.execute(InstructionSetRunner.java:59)
	at com.ql.util.express.InstructionSetRunner.execute(InstructionSetRunner.java:46)
	at com.ql.util.express.InstructionSetRunner.executeOuter(InstructionSetRunner.java:18)
	at com.ql.util.express.ExpressRunner.execute(ExpressRunner.java:570)
	at com.ql.util.express.ExpressRunner.execute(ExpressRunner.java:538)
	at com.ql.util.express.example.OperatorTest.testCharcharComapre(OperatorTest.java:93)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:59)
	at org.junit.internal.runners.MethodRoadie.runTestMethod(MethodRoadie.java:98)
	at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:79)
	at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:87)
	at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:77)
	at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:42)
	at org.junit.internal.runners.JUnit4ClassRunner.invokeTestMethod(JUnit4ClassRunner.java:88)
	at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:51)
	at org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:44)
	at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:27)
	at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:37)
	at org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:42)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:130)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: java.lang.Exception: a和a不能执行compare 操作
	at com.ql.util.express.Operator.compareData(Operator.java:66)
	at com.ql.util.express.instruction.op.OperatorEqualsLessMore.executeInner(OperatorEqualsLessMore.java:50)
	at com.ql.util.express.instruction.op.OperatorEqualsLessMore.executeInner(OperatorEqualsLessMore.java:25)
	at com.ql.util.express.instruction.op.OperatorEqualsLessMore.executeInner(OperatorEqualsLessMore.java:21)
	at com.ql.util.express.Operator.executeInner(Operator.java:20)
	at com.ql.util.express.instruction.op.OperatorBase.execute(OperatorBase.java:67)
	at com.ql.util.express.instruction.detail.InstructionOperator.execute(InstructionOperator.java:44)
	... 29 more

[baoxingjie]

多谢发现问题，目前已经解决问题，请查看单元测试 https://github.com/alibaba/QLExpress/blob/master/src/test/java/com/ql/util/express/bugfix/CompareObjectTest.java