first version of new validation algorithm, that is a lot faster

src/main/java/ninja/javafx/smartcsv/validation/GroovyValidation.java

@@ -0,0 +1,53 @@
+package ninja.javafx.smartcsv.validation;
+
+import groovy.lang.Binding;
+import groovy.lang.GroovyShell;
+import groovy.lang.Script;
+import org.codehaus.groovy.control.CompilationFailedException;
+
+/**
+ * Created by abi on 07.08.2016.
+ */
+public class GroovyValidation implements Validation {
+
+    private String groovyScript;
+    private GroovyShell shell = new GroovyShell();
+    private Script script;
+
+    public GroovyValidation(String groovyScript) {
+        this.groovyScript = groovyScript;
+        script = shell.parse(groovyScript);
+    }
+
+
+    @Override
+    public void check(int row, String value, ValidationError error) {
+        Binding binding = new Binding();
+        binding.setVariable("value", value);
+        script.setBinding(binding);
+
+        Object groovyResult = null;
+        try {
+            groovyResult = script.run();
+        } catch (CompilationFailedException e) {
+            error.add("validation.message.groovy.exception", groovyScript, e.getMessage());
+            e.printStackTrace();
+        }
+        if (groovyResult == null) {
+            error.add("validation.message.groovy.return.null", groovyScript);
+        }
+
+        if (!isScriptResultTrue(groovyResult)) {
+            error.add(groovyResult.toString());
+        }
+    }
+
+    @Override
+    public Type getType() {
+        return Type.GROOVY;
+    }
+
+    private boolean isScriptResultTrue(Object groovyResult) {
+        return groovyResult.equals(true) || groovyResult.toString().trim().toLowerCase().equals("true");
+    }
+}