contract

In WCF, can data contract classes inherit from one another?

由 这一生的挚爱 提交于 2019-11-29 00:07:51
问题 In a WCF service, I have two classes with the [DataContract] attribute. One of these classes has an "is-a" relationship with the other - so class B can inherit from class A. However, when I configure inheritance between these two classes, both denoted with a [DataContract] attribute, the metadata fails to load when testing the services. Is this possible in WCF? Am I missing another attribute? [DataContract] public class A { [DataMember] public MyCustomType AValue1{ get; set; } [DataMember]

Where do smart contracts reside in blockchain (Ethereum or Hyperledger)

由 China☆狼群 提交于 2019-11-28 22:17:40
问题 So, let us consider a typical trade finance process flow. Exporter deploys a contract that has conditions of the shipment and a hash is generated once the deployment is finished. Questions: 1) Where is the contract stored? 2) How other participants such as customs and importer can access this contract? 3) Can we activate participant level access to the contract on the blockchain? 回答1: There are several aspects to Ethereum and Hyperledger which make them quite different. Let me give a somewhat

In the WCF web programming model, how can one write an operation contract with an array of query string parameters (i.e. with the same name)?

由 落花浮王杯 提交于 2019-11-27 07:41:15
Using the WCF web programming model one can specify an operation contract like so: [OperationContract] [WebGet(ResponseFormat = WebMessageFormat.Xml, UriTemplate = "SomeRequest?qs1={qs1}&qs2={qs2}")] XElement SomeRequest1(string qs1, string qs2); Now if we had to make a contract that accepts an array of parameters with the same name (in this case qs1 ) contract like so... [OperationContract] [WebGet(ResponseFormat = WebMessageFormat.Xml, UriTemplate = "SomeRequest?qs1={qs1}&qs1={qs2}")] XElement SomeRequest2(string qs1, string qs2); We get the error message at run time when we make the

why does my compare method throw exception — Comparison method violates its general contract!

由 不想你离开。 提交于 2019-11-27 05:16:31
Why does this code public class SponsoredComparator implements Comparator<SRE> { public boolean equals(SRE arg0, SRE arg1){ return arg0.getSponsored()==arg1.getSponsored(); } public int compare(SRE object1, SRE object2) { Log.d("SponsoredComparator","object1.getName() == "+ object1.getName()); Log.d("SponsoredComparator","object1.getSponsored() == "+ object1.getSponsored()); Log.d("SponsoredComparator","object2.getName() == "+ object2.getName()); Log.d("SponsoredComparator","object2.getSponsored() == "+ object2.getSponsored()); Log.d("SponsoredComparator","compare return == "+ (object1

In the WCF web programming model, how can one write an operation contract with an array of query string parameters (i.e. with the same name)?

由 孤者浪人 提交于 2019-11-26 13:45:57
问题 Using the WCF web programming model one can specify an operation contract like so: [OperationContract] [WebGet(ResponseFormat = WebMessageFormat.Xml, UriTemplate = "SomeRequest?qs1={qs1}&qs2={qs2}")] XElement SomeRequest1(string qs1, string qs2); Now if we had to make a contract that accepts an array of parameters with the same name (in this case qs1 ) contract like so... [OperationContract] [WebGet(ResponseFormat = WebMessageFormat.Xml, UriTemplate = "SomeRequest?qs1={qs1}&qs1={qs2}")]

why does my compare method throw exception — Comparison method violates its general contract!

由 a 夏天 提交于 2019-11-26 11:30:06
问题 Why does this code public class SponsoredComparator implements Comparator<SRE> { public boolean equals(SRE arg0, SRE arg1){ return arg0.getSponsored()==arg1.getSponsored(); } public int compare(SRE object1, SRE object2) { Log.d(\"SponsoredComparator\",\"object1.getName() == \"+ object1.getName()); Log.d(\"SponsoredComparator\",\"object1.getSponsored() == \"+ object1.getSponsored()); Log.d(\"SponsoredComparator\",\"object2.getName() == \"+ object2.getName()); Log.d(\"SponsoredComparator\",\
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