org.jooby.Mutant Maven / Gradle / Ivy
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package org.jooby;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.SortedSet;
import com.google.common.primitives.Primitives;
import com.google.inject.TypeLiteral;
import com.google.inject.util.Types;
/**
*
* A type safe {@link Mutant} useful for reading parameters/headers/session attributes, etc..
*
*
*
* // str param
* String value = request.param("str").value();
*
* // optional str
* String value = request.param("str").value("defs");
*
* // int param
* int value = request.param("some").intValue();
*
* // optional int param
* Optional{@literal <}Integer{@literal >} value = request.param("some").toOptional(Integer.class);
* // list param
* List{@literal <}String{@literal >} values = request.param("some").toList(String.class);
*
* // file upload
* Upload upload = request.param("file").to(Upload.class);
*
*
* @author edgar
* @since 0.1.0
* @see Request#param(String)
* @see Request#header(String)
*/
public interface Mutant {
/**
* @return Get a boolean when possible.
*/
default boolean booleanValue() {
return to(boolean.class);
}
/**
* @param value Default value to use.
* @return Get a boolean.
*/
default boolean booleanValue(final boolean value) {
return toOptional(Boolean.class).orElse(value);
}
/**
* @return Get a byte when possible.
*/
default byte byteValue() {
return to(byte.class);
}
/**
* @param value Default value to use.
* @return Get a byte.
*/
default byte byteValue(final byte value) {
return toOptional(Byte.class).orElse(value);
}
/**
* @return Get a byte when possible.
*/
default char charValue() {
return to(char.class);
}
/**
* @param value Default value to use.
* @return Get a char.
*/
default char charValue(final char value) {
return toOptional(Character.class).orElse(value);
}
/**
* @return Get a short when possible.
*/
default short shortValue() {
return to(short.class);
}
/**
* @param value Default value to use.
* @return Get a short value.
*/
default short shortValue(final short value) {
return toOptional(Short.class).orElse(value);
}
/**
* @return Get an integer when possible.
*/
default int intValue() {
return to(int.class);
}
/**
* @param value Default value to use.
* @return Get an integer.
*/
default int intValue(final int value) {
return toOptional(Integer.class).orElse(value);
}
/**
* @return Get a long when possible.
*/
default long longValue() {
return to(long.class);
}
/**
* @param value Default value to use.
* @return Get a long.
*/
default long longValue(final long value) {
return toOptional(Long.class).orElse(value);
}
/**
* @return Get a string when possible.
*/
default String value() {
return to(String.class);
}
/**
* @param value Default value to use.
* @return Get a string.
*/
default String value(final String value) {
return toOptional().orElse(value);
}
/**
* @return Get a float when possible.
*/
default float floatValue() {
return to(float.class);
}
/**
* @param value Default value to use.
* @return Get a float.
*/
default float floatValue(final float value) {
return toOptional(Float.class).orElse(value);
}
/**
* @return Get a double when possible.
*/
default double doubleValue() {
return to(double.class);
}
/**
* @param value Default value to use.
* @return Get a double.
*/
default double doubleValue(final double value) {
return toOptional(Double.class).orElse(value);
}
/**
* @param type The enum type.
* @param Enum type.
* @return Get an enum when possible.
*/
default > T toEnum(final Class type) {
return to(type);
}
/**
* @param value Default value to use.
* @param Enum type.
* @return Get an enum.
*/
@SuppressWarnings("unchecked")
default > T toEnum(final T value) {
Optional optional = (Optional) toOptional(value.getClass());
return optional.orElse(value);
}
/**
* @param type The element type.
* @param List type.
* @return Get list of values when possible.
*/
@SuppressWarnings("unchecked")
default List toList(final Class type) {
return (List) to(TypeLiteral.get(Types.listOf(Primitives.wrap(type))));
}
/**
* @return Get list of values when possible.
*/
default List toList() {
return toList(String.class);
}
/**
* @return Get set of values when possible.
*/
default Set toSet() {
return toSet(String.class);
}
/**
* @param type The element type.
* @param Set type.
* @return Get set of values when possible.
*/
@SuppressWarnings("unchecked")
default Set toSet(final Class type) {
return (Set) to(TypeLiteral.get(Types.setOf(Primitives.wrap(type))));
}
/**
* @return Get sorted set of values when possible.
*/
default SortedSet toSortedSet() {
return toSortedSet(String.class);
}
/**
* @param type The element type.
* @param Set type.
* @return Get sorted set of values when possible.
*/
@SuppressWarnings("unchecked")
default > SortedSet toSortedSet(final Class type) {
return (SortedSet) to(TypeLiteral.get(
Types.newParameterizedType(SortedSet.class, Primitives.wrap(type))
));
}
/**
* @return An optional string value.
*/
default Optional toOptional() {
return toOptional(String.class);
}
/**
* @param type The optional type.
* @param Optional type.
* @return Get an optional value when possible.
*/
@SuppressWarnings("unchecked")
default Optional toOptional(final Class type) {
return (Optional) to(TypeLiteral.get(
Types.newParameterizedType(Optional.class, Primitives.wrap(type))
));
}
/**
* Convert a form field to file {@link Upload}.
*
* @return A file {@link Upload}.
*/
default Upload toUpload() {
return to(Upload.class);
}
/**
* Convert a raw value to the given type.
*
* @param type The type to convert to.
* @param Target type.
* @return Get a value when possible.
*/
default T to(final Class type) {
return to(TypeLiteral.get(type));
}
/**
* Convert a raw value to the given type.
*
* @param type The type to convert to.
* @param Target type.
* @return Get a value when possible.
*/
T to(TypeLiteral type);
/**
* Convert a raw value to the given type. This method will temporary set {@link MediaType} before
* parsing a value, useful if a form field from a HTTP POST was send as json (or any other data).
*
* @param type The type to convert to.
* @param mtype A media type to hint a parser.
* @param Target type.
* @return Get a value when possible.
*/
default T to(final Class type, final String mtype) {
return to(type, MediaType.valueOf(mtype));
}
/**
* Convert a raw value to the given type. This method will temporary set {@link MediaType} before
* parsing a value, useful if a form field from a HTTP POST was send as json (or any other data).
*
* @param type The type to convert to.
* @param mtype A media type to hint a parser.
* @param Target type.
* @return Get a value when possible.
*/
default T to(final Class type, final MediaType mtype) {
return to(TypeLiteral.get(type), mtype);
}
/**
* Convert a raw value to the given type. This method will temporary set {@link MediaType} before
* parsing a value, useful if a form field from a HTTP POST was send as json (or any other data).
*
* @param type The type to convert to.
* @param mtype A media type to hint a parser.
* @param Target type.
* @return Get a value when possible.
*/
default T to(final TypeLiteral type, final String mtype) {
return to(type, MediaType.valueOf(mtype));
}
/**
* Convert a raw value to the given type. This method will temporary set {@link MediaType} before
* parsing a value, useful if a form field from a HTTP POST was send as json (or any other data).
*
* @param type The type to convert to.
* @param mtype A media type to hint a parser.
* @param Target type.
* @return Get a value when possible.
*/
T to(TypeLiteral type, MediaType mtype);
/**
* A map view of this mutant.
*
* If this mutant is the result of {@link Request#params()} the resulting map will have all the
* available parameter names.
*
* If the mutant is the result of {@link Request#param(String)} the resulting map will have just
* one entry, with the name as key.
*
* If the mutant is the result of {@link Request#body()} the resulting map will have just
* one entry, with a key of body.
*
* @return A map view of this mutant.
*/
Map toMap();
/**
* @return True if this mutant has a value (param, header, body, etc...).
*/
boolean isSet();
}