Feat/@json property annotation

[havardh]

@spirit93 here is my proposal for @JsonIgnore and @JsonProperty, if you have some spare time please check out if these meets your needs for #78 :v:

[spirit93]

For https://github.com/havardh/javaflow/issues/78 @JsonGetter needs to or the ability to use @JsonProperty annotation over the method. However, if you apply current changes it will be enough for me. Why do I need this annotation? I will give a small example

import com.fasterxml.jackson.annotation.JsonProperty;

public class Payment {
    private String VAT;

    @JsonProperty("VAT")
    public String getVAT() {
        return VAT;
    }

    public void setVAT(String VAT) {
        this.VAT = VAT;
    }
}

Json: {"VAT":"30%"} But:

import com.fasterxml.jackson.annotation.JsonProperty;

public class Payment {
    @JsonProperty("VAT")
    private String VAT;

    public String getVAT() {
        return VAT;
    }

    public void setVAT(String VAT) {
        this.VAT = VAT;
    }
}

Json: {"vat":"30%","VAT":"30%"} Because of this, I am forced to use @JsonProperty or @JsonGetter over the method.

[spirit93]

Also need to fix validation logic

import com.fasterxml.jackson.annotation.JsonIgnore;

import java.math.BigDecimal;

public class TestObject {
    @JsonIgnore
    private BigDecimal total;

    public BigDecimal getTotal() {
        return total;
    }

    public void setTotal(BigDecimal total) {
        this.total = total;
    }
}

Execute: javaflow ./ Result:

Exception in thread "main" picocli.CommandLine$ExecutionException: Error while running command (com.github.havardh.javaflow.JavaFlow@44f75083): com.github.havardh.javaflow.exceptions.AggregatedException: Verification failed:

Could not find types: {test.TestObject=[total: java.math.BigDecimal]}
  at picocli.CommandLine.execute(CommandLine.java:1051)
  at picocli.CommandLine.access$900(CommandLine.java:142)
  at picocli.CommandLine$RunLast.handle(CommandLine.java:1246)
  at picocli.CommandLine$RunLast.handle(CommandLine.java:1214)
  at picocli.CommandLine$AbstractParseResultHandler.handleParseResult(CommandLine.java:1122)
  at picocli.CommandLine.parseWithHandlers(CommandLine.java:1405)
  at picocli.CommandLine.run(CommandLine.java:1864)
  at picocli.CommandLine.run(CommandLine.java:1794)
  at com.github.havardh.javaflow.JavaFlow.main(JavaFlow.java:54)
Caused by: com.github.havardh.javaflow.exceptions.AggregatedException: Verification failed:

Could not find types: {test.TestObject=[total: java.math.BigDecimal]}
  at com.github.havardh.javaflow.Execution.verify(Execution.java:119)
  at java.util.stream.ReferencePipeline$11$1.accept(ReferencePipeline.java:372)
  at java.util.stream.ReferencePipeline$11$1.accept(ReferencePipeline.java:373)
  at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
  at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
  at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
  at java.util.stream.Streams$StreamBuilderImpl.forEachRemaining(Streams.java:419)
  at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
  at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
  at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
  at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
  at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
  at com.github.havardh.javaflow.Execution.run(Execution.java:98)
  at com.github.havardh.javaflow.JavaFlow.run(JavaFlow.java:90)
  at picocli.CommandLine.execute(CommandLine.java:1043)
  ... 8 more

No need to validate field with @JsonIgnore mark