1 files changed, 26 insertions, 0 deletions
diff --git a/src/main/java/junitparams/converters/Converter.java b/src/main/java/junitparams/converters/Converter.java
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index 0000000..1ef9c1b
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+++ b/src/main/java/junitparams/converters/Converter.java
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+package junitparams.converters;
+
+import java.lang.annotation.Annotation;
+
+/**
+ * Defines the logic to convert parameter annotated with A to type T. Converter must have a public no-args constructor. Configuration is
+ * done via {@link Converter#initialize(java.lang.annotation.Annotation)} method<br>
+ * Inspired by javax.validation.ConstraintValidator
+ *
+ * @param <A> type of annotation mentioning this converter
+ * @param <T> conversion target type
+ */
+public interface Converter<A extends Annotation, T> {
+
+    /**
+     * Initializes this converter - you can read your annotation config here.
+     */
+    void initialize(A annotation);
+
+    /**
+     * Converts param to desired type.
+     *
+     * @throws ConversionFailedException
+     */
+    T convert(Object param) throws ConversionFailedException;
+}