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Please keep the discussion on the mailing list rather than commenting on the wiki (wiki discussions get unwieldy fast).
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3) The ParamInfoFactory class provides APIs to build a ParamInfo.
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public class ParamInfoFactory {
public static <V> ParamInfoBuilder<V> createParamInfo(String name, Class<V> valueClass) {...}
public static class ParamInfoBuilder<V> {
ParamInfoBuilder(String name, Class<V> valueClass) {...}
public ParamInfoBuilder<V> setAlias(String[] alias) {...}
public ParamInfoBuilder<V> setDescription(String description) {...}
public ParamInfoBuilder<V> setOptional() {...}
public ParamInfoBuilder<V> setRequired() {...}
public ParamInfoBuilder<V> setHasDefaultValue(V defaultValue) {...}
public ParamInfoBuilder<V> setValidator(ParamValidator<V> validator) {...}
public ParamInfo<V> build() {...}
}
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2) We propose to add the following subclasses of Param<?> to simplify the creation of parameters with primitive-typed values (e.g. long, int, boolean).
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public class BooleanParam extends Param<Boolean> {
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}
public class IntParam extends Param<Integer> {
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}
public class LongParam extends Param<Long> {
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}
public class FloatParam extends Param<Float> {
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}
public class DoubleParam extends Param<Double> {
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}
public class StringParam extends Param<String> {
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}
public class IntArrayParam extends Param<Integer[]> {
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}
public class LongArrayParam extends Param<Long[]> {
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}
public class FloatArrayParam extends Param<Float[]> {
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}
public class DoubleArrayParam extends Param<Double[]> {
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}
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