com.helger.commons.traits

Interface IGetterByKeyTrait<KEYTYPE>

Type Parameters:

KEYTYPE - The key type. E.g. String etc.

All Known Subinterfaces:

IAttributeContainer<KEYTYPE,VALUETYPE>, IAttributeContainerAny<KEYTYPE>, IStringMap

All Known Implementing Classes:

AttributeContainer, AttributeContainerAny, AttributeContainerAnyConcurrent, AttributeContainerConcurrent, StringMap

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface IGetterByKeyTrait<KEYTYPE>

A generic convert Object to anything with convenience API.

Author:

Philip Helger

Method Summary

Modifier and Type	Method and Description
default boolean	containsNonNullValue(KEYTYPE aKey)
default boolean	containsNullValue(KEYTYPE aKey)
default BigDecimal	getAsBigDecimal(KEYTYPE aKey)
default BigDecimal	getAsBigDecimal(KEYTYPE aKey, BigDecimal aDefault)
default BigInteger	getAsBigInteger(KEYTYPE aKey)
default BigInteger	getAsBigInteger(KEYTYPE aKey, BigInteger aDefault)
default boolean	getAsBoolean(KEYTYPE aKey)
default boolean	getAsBoolean(KEYTYPE aKey, boolean bDefault)
default Boolean	getAsBooleanObj(KEYTYPE aKey)
default byte	getAsByte(KEYTYPE aKey)
default byte	getAsByte(KEYTYPE aKey, byte nDefault)
default byte[]	getAsByteArray(KEYTYPE aKey)
default Byte	getAsByteObj(KEYTYPE aKey)
default char	getAsChar(KEYTYPE aKey)
default char	getAsChar(KEYTYPE aKey, char cDefault)
default char[]	getAsCharArray(KEYTYPE aKey)
default char[]	getAsCharArray(KEYTYPE aKey, char[] aDefault)
default Character	getAsCharObj(KEYTYPE aKey)
default double	getAsDouble(KEYTYPE aKey)
default double	getAsDouble(KEYTYPE aKey, double dDefault)
default Double	getAsDoubleObj(KEYTYPE aKey)
default float	getAsFloat(KEYTYPE aKey)
default float	getAsFloat(KEYTYPE aKey, float fDefault)
default Float	getAsFloatObj(KEYTYPE aKey)
default int	getAsInt(KEYTYPE aKey)
default int	getAsInt(KEYTYPE aKey, int nDefault)
default Integer	getAsIntObj(KEYTYPE aKey)
default LocalDate	getAsLocalDate(KEYTYPE aKey)
default LocalDate	getAsLocalDate(KEYTYPE aKey, LocalDate aDefault)
default LocalDate	getAsLocalDate(KEYTYPE aKey, Locale aContentLocale) Get the value as a String, interpreted as a LocalDate.
default LocalDateTime	getAsLocalDateTime(KEYTYPE aKey)
default LocalDateTime	getAsLocalDateTime(KEYTYPE aKey, LocalDateTime aDefault)
default LocalDateTime	getAsLocalDateTime(KEYTYPE aKey, Locale aContentLocale) Get the value as a String, interpreted as a LocalDateTime.
default LocalTime	getAsLocalTime(KEYTYPE aKey)
default LocalTime	getAsLocalTime(KEYTYPE aKey, Locale aContentLocale) Get the value as a String, interpreted as a LocalTime.
default LocalTime	getAsLocalTime(KEYTYPE aKey, LocalTime aDefault)
default long	getAsLong(KEYTYPE aKey)
default long	getAsLong(KEYTYPE aKey, long nDefault)
default Long	getAsLongObj(KEYTYPE aKey)
default short	getAsShort(KEYTYPE aKey)
default short	getAsShort(KEYTYPE aKey, short nDefault)
default Short	getAsShortObj(KEYTYPE aKey)
default Blob	getAsSqlBlob(KEYTYPE aKey)
default Clob	getAsSqlClob(KEYTYPE aKey)
default Date	getAsSqlDate(KEYTYPE aKey)
default NClob	getAsSqlNClob(KEYTYPE aKey)
default RowId	getAsSqlRowId(KEYTYPE aKey)
default Time	getAsSqlTime(KEYTYPE aKey)
default Timestamp	getAsSqlTimestamp(KEYTYPE aKey)
default String	getAsString(KEYTYPE aKey)
default String	getAsString(KEYTYPE aKey, String sDefault)
default ICommonsList<String>	getAsStringList(KEYTYPE aKey) Get a list of all attribute values with the same name.
default ICommonsList<String>	getAsStringList(KEYTYPE aKey, ICommonsList<String> aDefault) Get a list of all attribute values with the same name.
default ICommonsOrderedSet<String>	getAsStringSet(KEYTYPE aKey) Get a set of all attribute values with the same name.
default ICommonsOrderedSet<String>	getAsStringSet(KEYTYPE aKey, ICommonsOrderedSet<String> aDefault) Get a set of all attribute values with the same name.
default <T> T	getCastedValue(KEYTYPE aKey) Get the contained value casted to the return type.
default <T> T	getCastedValue(KEYTYPE aKey, Class<T> aClass) Get the contained value casted to the specified class.
default <T> T	getCastedValue(KEYTYPE aKey, T aDefault) Get the contained value casted to the return type.
default <T> T	getCastedValue(KEYTYPE aKey, T aDefault, Class<T> aClass) Get the contained value casted to the specified class.
default <T> T	getConvertedValue(KEYTYPE aKey, Class<T> aClass) Get the contained value converted using TypeConverter to the passed class.
default <T> T	getConvertedValue(KEYTYPE aKey, T aDefault, Class<T> aClass) Get the contained value converted using TypeConverter to the passed class.
default <T> T	getSafeCastedValue(KEYTYPE aKey, Class<T> aClass) Get the contained value casted to the specified class, but only if the cast is possible.
default <T> T	getSafeCastedValue(KEYTYPE aKey, T aDefault, Class<T> aClass) Get the contained value casted to the specified class, but only if the cast is possible.
Object	getValue(KEYTYPE aKey) Get the value matching the provided key.
default Class<?>	getValueClass(KEYTYPE aKey)
default boolean	hasStringValue(KEYTYPE aKey, String sDesiredValue) Check if a attribute with the given name is present in the request and has the specified value.
default boolean	hasStringValue(KEYTYPE aKey, String sDesiredValue, boolean bDefault) Check if a attribute with the given name is present in the request and has the specified value.
default void	onSafeCastError(KEYTYPE aKey, Class<?> aClass, Object aValue) Implement this method to handle cases of getSafeCastedValue(Object, Object, Class) that failed because invalid provided class.

Method Detail

getValue

@Nullable
Object getValue(@Nullable
                           KEYTYPE aKey)

Get the value matching the provided key.

Parameters:

aKey - The key to query. May be null.

Returns:

The value matching the key. No null constraints applicable.

getValueClass

@Nullable
default Class<?> getValueClass(@Nullable
                                          KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

The class of the value or null if no value is contained.

containsNonNullValue

default boolean containsNonNullValue(@Nullable
                                     KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

true if the value is not null. Same as getValue()!=null.

containsNullValue

default boolean containsNullValue(@Nullable
                                  KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

true if the value is null. Same as getValue()==null.

getCastedValue

@Nullable
default <T> T getCastedValue(@Nullable
                                        KEYTYPE aKey)

Get the contained value casted to the return type.

Type Parameters:

T - Destination type

Parameters:

aKey - The key to be accessed. May be null.

Returns:

The object value casted to the passed class. May be null if the contained value is null.

Throws:

ClassCastException - in case the value types are not convertible

getCastedValue

@Nullable
default <T> T getCastedValue(@Nullable
                                        KEYTYPE aKey,
                                        @Nullable
                                        T aDefault)

Get the contained value casted to the return type.

Type Parameters:

T - Destination type

Parameters:

aKey - The key to be accessed. May be null.

aDefault - The value to be returned if the retrieved value is null .

Returns:

The object value casted to the passed class. May be null if the contained value is null.

Throws:

ClassCastException - in case the value types are not convertible

getCastedValue

@Nullable
default <T> T getCastedValue(@Nullable
                                        KEYTYPE aKey,
                                        @Nonnull
                                        Class<T> aClass)

Get the contained value casted to the specified class.

Type Parameters:

T - Destination type

Parameters:

aKey - The key to be accessed. May be null.

aClass - The class to cast to.

Returns:

The object value casted to the passed class. May be null if the contained value is null.

Throws:

ClassCastException - in case the value types are not convertible

getCastedValue

@Nullable
default <T> T getCastedValue(@Nullable
                                        KEYTYPE aKey,
                                        @Nullable
                                        T aDefault,
                                        @Nonnull
                                        Class<T> aClass)

Get the contained value casted to the specified class.

Type Parameters:

T - Destination type

Parameters:

aKey - The key to be accessed. May be null.

aDefault - The value to be returned if the retrieved value is null .

aClass - The class to cast to.

Returns:

The object value casted to the passed class. May be null if the contained value is null.

Throws:

ClassCastException - in case the value types are not convertible

getSafeCastedValue

@Nullable
default <T> T getSafeCastedValue(@Nullable
                                            KEYTYPE aKey,
                                            @Nonnull
                                            Class<T> aClass)

Get the contained value casted to the specified class, but only if the cast is possible.

Type Parameters:

T - Destination type

Parameters:

aKey - The key to be accessed. May be null.

aClass - The class to cast to.

Returns:

The object value casted to the passed class. May be null if the contained value is null.

Throws:

ClassCastException - in case the value types are not convertible

See Also:

getSafeCastedValue(Object, Object, Class)

onSafeCastError

default void onSafeCastError(@Nullable
                             KEYTYPE aKey,
                             @Nonnull
                             Class<?> aClass,
                             @Nonnull
                             Object aValue)

Implement this method to handle cases of getSafeCastedValue(Object, Object, Class) that failed because invalid provided class.

 "Key '" + aKey + "' is present, but not as a " + aClass + " but as a " + aValue.getClass ()
 

Parameters:

aKey - Key that was searched

aClass - The class that was desired

aValue - The value that was retrieved and cannot be casted to the class

Since:

9.0.1

getSafeCastedValue

@Nullable
default <T> T getSafeCastedValue(@Nullable
                                            KEYTYPE aKey,
                                            @Nullable
                                            T aDefault,
                                            @Nonnull
                                            Class<T> aClass)

Get the contained value casted to the specified class, but only if the cast is possible.

Type Parameters:

T - Destination type

Parameters:

aKey - The key to be accessed. May be null.

aDefault - The value to be returned if the retrieved value is null .

aClass - The class to cast to.

Returns:

The object value casted to the passed class. May be null if the contained value is null.

Throws:

ClassCastException - in case the value types are not convertible

See Also:

getSafeCastedValue(Object, Class)

getConvertedValue

@Nullable
default <T> T getConvertedValue(@Nullable
                                           KEYTYPE aKey,
                                           @Nonnull
                                           Class<T> aClass)

Get the contained value converted using TypeConverter to the passed class.

Type Parameters:

T - Destination type

Parameters:

aKey - The key to be accessed. May be null.

aClass - The class to convert to.

Returns:

The object value casted to the passed class. May be null if the contained value is null.

Throws:

TypeConverterException - in case of an error

getConvertedValue

@Nullable
default <T> T getConvertedValue(@Nullable
                                           KEYTYPE aKey,
                                           @Nullable
                                           T aDefault,
                                           @Nonnull
                                           Class<T> aClass)

Get the contained value converted using TypeConverter to the passed class.

Type Parameters:

T - Destination type

Parameters:

aKey - The key to be accessed. May be null.

aDefault - The value to be returned if the retrieved value is null or if type conversion fails.

aClass - The class to convert to. May not be null.

Returns:

The object value casted to the passed class. May be null if the contained value is null.

getAsBoolean

default boolean getAsBoolean(@Nullable
                             KEYTYPE aKey)

getAsBoolean

default boolean getAsBoolean(@Nullable
                             KEYTYPE aKey,
                             boolean bDefault)

getAsByte

default byte getAsByte(@Nullable
                       KEYTYPE aKey)

getAsByte

default byte getAsByte(@Nullable
                       KEYTYPE aKey,
                       byte nDefault)

getAsChar

default char getAsChar(@Nullable
                       KEYTYPE aKey)

getAsChar

default char getAsChar(@Nullable
                       KEYTYPE aKey,
                       char cDefault)

getAsDouble

default double getAsDouble(@Nullable
                           KEYTYPE aKey)

getAsDouble

default double getAsDouble(@Nullable
                           KEYTYPE aKey,
                           double dDefault)

getAsFloat

default float getAsFloat(@Nullable
                         KEYTYPE aKey)

getAsFloat

default float getAsFloat(@Nullable
                         KEYTYPE aKey,
                         float fDefault)

getAsInt

default int getAsInt(@Nullable
                     KEYTYPE aKey)

getAsInt

default int getAsInt(@Nullable
                     KEYTYPE aKey,
                     int nDefault)

getAsLong

default long getAsLong(@Nullable
                       KEYTYPE aKey)

getAsLong

default long getAsLong(@Nullable
                       KEYTYPE aKey,
                       long nDefault)

getAsShort

default short getAsShort(@Nullable
                         KEYTYPE aKey)

getAsShort

default short getAsShort(@Nullable
                         KEYTYPE aKey,
                         short nDefault)

getAsString

@Nullable
default String getAsString(@Nullable
                                      KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,String.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsString

@Nullable
default String getAsString(@Nullable
                                      KEYTYPE aKey,
                                      @Nullable
                                      String sDefault)

Parameters:

aKey - The key to be accessed. May be null.

sDefault - The value to be returned if the retrieved value is null .

Returns:

getConvertedValue (aKey,sDefault, String.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsCharArray

@Nullable
default char[] getAsCharArray(@Nullable
                                         KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,char [].class)

See Also:

getConvertedValue(Object,Object,Class)

getAsCharArray

@Nullable
default char[] getAsCharArray(@Nullable
                                         KEYTYPE aKey,
                                         @Nullable
                                         char[] aDefault)

Parameters:

aKey - The key to be accessed. May be null.

aDefault - The value to be returned if the retrieved value is null .

Returns:

getConvertedValue (aKey, aDefault, char[].class)

See Also:

getConvertedValue(Object,Object,Class)

getAsBigDecimal

@Nullable
default BigDecimal getAsBigDecimal(@Nullable
                                              KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,BigDecimal.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsBigDecimal

@Nullable
default BigDecimal getAsBigDecimal(@Nullable
                                              KEYTYPE aKey,
                                              @Nullable
                                              BigDecimal aDefault)

Parameters:

aKey - The key to be accessed. May be null.

aDefault - The value to be returned if the retrieved value is null .

Returns:

getConvertedValue (aKey,aDefault,BigDecimal.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsBigInteger

@Nullable
default BigInteger getAsBigInteger(@Nullable
                                              KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,BigInteger.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsBigInteger

@Nullable
default BigInteger getAsBigInteger(@Nullable
                                              KEYTYPE aKey,
                                              @Nullable
                                              BigInteger aDefault)

Parameters:

aKey - The key to be accessed. May be null.

aDefault - The value to be returned if the retrieved value is null .

Returns:

getConvertedValue (aKey,aDefault,BigInteger.class)

See Also:

getConvertedValue(Object,Object, Class)

getAsLocalDate

@Nullable
default LocalDate getAsLocalDate(@Nullable
                                            KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,LocalDate.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsLocalDate

@Nullable
default LocalDate getAsLocalDate(@Nullable
                                            KEYTYPE aKey,
                                            @Nullable
                                            LocalDate aDefault)

Parameters:

aKey - The key to be accessed. May be null.

aDefault - The value to be returned if the retrieved value is null .

Returns:

getConvertedValue (aKey,aDefault,LocalDate.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsLocalTime

@Nullable
default LocalTime getAsLocalTime(@Nullable
                                            KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,LocalTime.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsLocalTime

@Nullable
default LocalTime getAsLocalTime(@Nullable
                                            KEYTYPE aKey,
                                            @Nullable
                                            LocalTime aDefault)

Parameters:

aKey - The key to be accessed. May be null.

aDefault - The value to be returned if the retrieved value is null .

Returns:

getConvertedValue (aKey,aDefault,LocalTime.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsLocalDateTime

@Nullable
default LocalDateTime getAsLocalDateTime(@Nullable
                                                    KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,LocalDateTime.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsLocalDateTime

@Nullable
default LocalDateTime getAsLocalDateTime(@Nullable
                                                    KEYTYPE aKey,
                                                    @Nullable
                                                    LocalDateTime aDefault)

Parameters:

aKey - The key to be accessed. May be null.

aDefault - The value to be returned if the retrieved value is null .

Returns:

getConvertedValue (aKey,aDefault,LocalDateTime.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsByteArray

@Nullable
default byte[] getAsByteArray(@Nullable
                                         KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,byte[].class)

See Also:

getConvertedValue(Object,Object,Class)

getAsBooleanObj

@Nullable
default Boolean getAsBooleanObj(@Nullable
                                           KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,Boolean.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsByteObj

@Nullable
default Byte getAsByteObj(@Nullable
                                     KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,Byte.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsCharObj

@Nullable
default Character getAsCharObj(@Nullable
                                          KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,Character.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsDoubleObj

@Nullable
default Double getAsDoubleObj(@Nullable
                                         KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,Double.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsFloatObj

@Nullable
default Float getAsFloatObj(@Nullable
                                       KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,Float.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsIntObj

@Nullable
default Integer getAsIntObj(@Nullable
                                       KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,Integer.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsLongObj

@Nullable
default Long getAsLongObj(@Nullable
                                     KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,Long.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsShortObj

@Nullable
default Short getAsShortObj(@Nullable
                                       KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,Short.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsSqlBlob

@Nullable
default Blob getAsSqlBlob(@Nullable
                                     KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,Blob.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsSqlClob

@Nullable
default Clob getAsSqlClob(@Nullable
                                     KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,Clob.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsSqlDate

@Nullable
default Date getAsSqlDate(@Nullable
                                     KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,Date.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsSqlNClob

@Nullable
default NClob getAsSqlNClob(@Nullable
                                       KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,NClob.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsSqlRowId

@Nullable
default RowId getAsSqlRowId(@Nullable
                                       KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,RowId.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsSqlTime

@Nullable
default Time getAsSqlTime(@Nullable
                                     KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,Time.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsSqlTimestamp

@Nullable
default Timestamp getAsSqlTimestamp(@Nullable
                                               KEYTYPE aKey)

Parameters:

aKey - The key to be accessed. May be null.

Returns:

getConvertedValue (aKey,null,Timestamp.class)

See Also:

getConvertedValue(Object,Object,Class)

getAsLocalDate

@Nullable
default LocalDate getAsLocalDate(@Nullable
                                            KEYTYPE aKey,
                                            @Nonnull
                                            Locale aContentLocale)

Get the value as a String, interpreted as a LocalDate.

Parameters:

aKey - The key to check. May be null.

aContentLocale - Locale to use for conversion.

Returns:

null if either the conversion to String or the parsing of the String failed.

getAsLocalTime

@Nullable
default LocalTime getAsLocalTime(@Nullable
                                            KEYTYPE aKey,
                                            @Nonnull
                                            Locale aContentLocale)

Get the value as a String, interpreted as a LocalTime.

Parameters:

aKey - The key to check. May be null.

aContentLocale - Locale to use for conversion.

Returns:

null if either the conversion to String or the parsing of the String failed.

getAsLocalDateTime

@Nullable
default LocalDateTime getAsLocalDateTime(@Nullable
                                                    KEYTYPE aKey,
                                                    @Nonnull
                                                    Locale aContentLocale)

Get the value as a String, interpreted as a LocalDateTime.

Parameters:

aKey - The key to check. May be null.

aContentLocale - Locale to use for conversion.

Returns:

null if either the conversion to String or the parsing of the String failed.

getAsStringList

@Nullable
default ICommonsList<String> getAsStringList(@Nullable
                                                        KEYTYPE aKey)

Get a list of all attribute values with the same name.

Parameters:

aKey - The key to check. May be null.

Returns:

null if no such attribute value exists

getAsStringList

@Nullable
default ICommonsList<String> getAsStringList(@Nullable
                                                        KEYTYPE aKey,
                                                        @Nullable
                                                        ICommonsList<String> aDefault)

Get a list of all attribute values with the same name.

Parameters:

aKey - The key to check. May be null.

aDefault - The default value to be returned, if no such attribute is present.

Returns:

aDefault if no such attribute value exists

getAsStringSet

@Nullable
default ICommonsOrderedSet<String> getAsStringSet(@Nullable
                                                             KEYTYPE aKey)

Get a set of all attribute values with the same name.

Parameters:

aKey - The key to check. May be null.

Returns:

null if no such attribute value exists

getAsStringSet

@Nullable
default ICommonsOrderedSet<String> getAsStringSet(@Nullable
                                                             KEYTYPE aKey,
                                                             @Nullable
                                                             ICommonsOrderedSet<String> aDefault)

Get a set of all attribute values with the same name.

Parameters:

aKey - The key to check. May be null.

aDefault - The default value to be returned, if no such attribute is present.

Returns:

aDefault if no such attribute value exists

hasStringValue

default boolean hasStringValue(@Nullable
                               KEYTYPE aKey,
                               @Nullable
                               String sDesiredValue)

Check if a attribute with the given name is present in the request and has the specified value.

Parameters:

aKey - The key to check. May be null.

sDesiredValue - The value to be matched

Returns:

true if an attribute with the given name is present and has the desired value

hasStringValue

default boolean hasStringValue(@Nullable
                               KEYTYPE aKey,
                               @Nullable
                               String sDesiredValue,
                               boolean bDefault)

Check if a attribute with the given name is present in the request and has the specified value. If no such attribute is present, the passed default value is returned.

Parameters:

aKey - The key to check. May be null.

sDesiredValue - The value to be matched

bDefault - the default value to be returned, if the specified attribute is not present

Returns:

true if an attribute with the given name is present and has the desired value, false if the attribute is present but has a different value. If the attribute is not present, the default value is returned.