io.sphere.client.shop.model.Attribute Maven / Gradle / Ivy
package io.sphere.client.shop.model;
import com.google.common.base.Function;
import com.google.common.base.Strings;
import com.google.common.collect.*;
import io.sphere.client.model.LocalizedString;
import io.sphere.internal.util.Log;
import io.sphere.client.model.Money;
import io.sphere.internal.util.Util;
import net.jcip.annotations.Immutable;
import org.codehaus.jackson.annotate.JsonCreator;
import org.codehaus.jackson.annotate.JsonProperty;
import org.codehaus.jackson.map.ObjectMapper;
import org.joda.time.DateTime;
import org.joda.time.LocalDate;
import org.joda.time.LocalTime;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
import org.joda.time.format.ISODateTimeFormat;
import com.google.common.base.Optional;
import javax.annotation.Nonnull;
import java.util.*;
/** Custom attribute of a {@link io.sphere.client.shop.model.Product}. */
@Immutable
public class Attribute {
@Nonnull private final String name;
private final Object value;
/** Name of this custom attribute. */
@Nonnull public String getName() { return name; }
/** Value of this custom attribute. */
public Object getValue() { return value; }
@JsonCreator
public Attribute(@JsonProperty("name") String name, @JsonProperty("value") Object value) {
if (Strings.isNullOrEmpty(name)) throw new IllegalArgumentException("Attribute name can't be empty.");
this.name = name;
this.value = value;
}
// ------------------------------
// Defaults
// ------------------------------
static String defaultString = "";
static int defaultInt = 0;
static double defaultDouble = 0.0;
static Money defaultMoney = null;
static DateTime defaultDateTime = null;
static Enum defaultEnum = new Enum("", "");
public static LocalizedString defaultLocalizedString = new LocalizedString(ImmutableMap.of());
// ------------------------------
// Typed value getters
// ------------------------------
public Optional getBoolean() {
final Optional result;
if (value != null && value instanceof Boolean) {
result = Optional.of((Boolean) value);
} else {
result = Optional.absent();
}
return result;
}
/** If this is a string attribute, returns the string value.
* @return The value or empty string if the value is not a string. */
public String getString() {
Object v = getValue();
if (v == null || !(v instanceof String)) return defaultString;
return (String)v;
}
/** If this is a string attribute, returns the string value.
* @return The value or empty string if the value is not a string. */
public LocalizedString getLocalizedString() {
Object v = getValue();
if (v == null || !(v instanceof LocalizedString)) return defaultLocalizedString;
return (LocalizedString)v;
}
/** If this is a number attribute, returns the integer value.
* @return The value or 0 if the value is not an integer. */
public int getInt() {
Object v = getValue();
if (!(v instanceof Integer)) return defaultInt;
return (Integer)v;
}
/** If this is a number attribute, returns the double value.
* @return The value or 0.0 if the value is not an double. */
public double getDouble() {
Object v = getValue();
// getDouble should work for integers too
if (v instanceof Integer) return getInt();
if (!(v instanceof Double)) return defaultDouble;
return (Double)v;
}
/** If this is a money attribute, returns the money value.
* @return The value or null if the value is not a money instance. */
public Money getMoney() {
// Jackson has no way of knowing that an attribute is a money attribute and its value should be parsed as Money.
// It sees a json object {'currencyCode':'EUR','centAmount':1200} and parses it as LinkedHashMap.
Object v = getValue();
if (!(v instanceof Map)) return defaultMoney;
return convertToMoney(v);
}
private Money convertToMoney(final Object v) {
return new ObjectMapper().convertValue(v, Money.class);
}
/** If this is an enum attribute, returns the value.
* @return The value or the empty string if the value is not an enum instance. */
public Enum getEnum() {
Object v = getValue();
if (!(v instanceof Map)) return defaultEnum;
else {
return extractEnum((Map) v);
}
}
private Enum extractEnum(Map map) {
String label = (String) map.get("label");
if (Strings.isNullOrEmpty(label)){
return defaultEnum;
}
else return new Enum((String) map.get("key"), label);
}
@SuppressWarnings("unchecked")//since object has no type information it needs to be casted
public LocalizableEnum getLocalizableEnum() {
LocalizableEnum result = new LocalizableEnum("", defaultLocalizedString);
if (getValue() instanceof Map) {
final Map data = (Map) getValue();
result = extractLocalizableEnum(data);
}
return result;
}
@SuppressWarnings("unchecked")//since object has no type information it needs to be casted
private LocalizableEnum extractLocalizableEnum(Map data) {
final String key = data.get("key").toString();
final Map labelsStringMap = (Map) data.get("label");
final Map labelsLocaleMap = Maps.newHashMap();
for (Map.Entry entry : labelsStringMap.entrySet()) {
labelsLocaleMap.put(Util.fromLanguageTag(entry.getKey()), entry.getValue());
}
return new LocalizableEnum(key, new LocalizedString(labelsLocaleMap));
}
@SuppressWarnings("unchecked")
public ImmutableSet getSet(final Class clazz) {
ImmutableSet result = ImmutableSet.of();
//TODO make static
final Map> mappers = Maps.newHashMap();
mappers.put(LocalizableEnum.class, new Function() {
@Override
public Object apply(final Object input) {
return extractLocalizableEnum((Map) input);
}
});
mappers.put(LocalizedString.class, new Function() {
@Override
public Object apply(final Object input) {
return LocalizedStringUtils.fromStringStringMap((Map) input);
}
});
final Function primitive = new Function() {
@Override
public Object apply(final Object input) {
return input;
}
};
mappers.put(Boolean.class, primitive);
mappers.put(String.class, primitive);
mappers.put(Enum.class, new Function() {
@Override
public Object apply(final Object input) {
return extractEnum((Map) input);
}
});
mappers.put(Integer.class, primitive);
mappers.put(Double.class, new Function() {
@Override
public Object apply(final Object input) {
Object result = input;
if (result.getClass().equals(Integer.class)) {
result = ((Integer)input).doubleValue();
}
return result;
}
});
mappers.put(Money.class, new Function() {
@Override
public Object apply(final Object input) {
return convertToMoney(input);
}
});
mappers.put(DateTime.class, new Function() {
@Override
public Object apply(final Object input) {
return dateTimeFormat.parseDateTime(input.toString());
}
});
mappers.put(LocalDate.class, new Function() {
@Override
public Object apply(final Object input) {
return DateTimeFormat.forPattern("yyyy-MM-dd").parseLocalDate(input.toString());
}
});
mappers.put(LocalTime.class, new Function() {
@Override
public Object apply(final Object input) {
return DateTimeFormat.forPattern("HH:mm:ss").parseLocalTime(input.toString());
}
});
if (getValue() instanceof List) {
if (mappers.containsKey(clazz)) {
final List data = (List) getValue();
result = ImmutableSet.copyOf(Iterables.transform(data, new Function() {
@Override
public T apply(final Object value) {
return (T) mappers.get(clazz).apply(value);
}
}));
} else {
Log.warn("mapper not present for " + clazz);
}
} else {
Log.warn("unexpected class " + getValue() + " " + getValue().getClass());
}
return result;
}
private static DateTimeFormatter dateTimeFormat = ISODateTimeFormat.dateTimeParser();
/** If this is a DateTime attribute, returns the DateTime value.
* @return The value or null if the value is not a DateTime. */
public DateTime getDateTime() {
// In case user creates attributes with LocalDate values
Object v = getValue();
if (v instanceof DateTime) return (DateTime)v;
// The backend returns dates and times as strings
String s = getString();
if (Strings.isNullOrEmpty(s)) return defaultDateTime;
try {
return dateTimeFormat.parseDateTime(s);
} catch (IllegalArgumentException e) {
// To handle getDate() called on string attributes
Log.error("Invalid DateTime: " + e.getMessage());
return defaultDateTime;
}
}
@Override public String toString() {
return "[" + getName() + ": " + getValue() + "]";
}
// ---------------------------------
// equals() and hashCode()
// ---------------------------------
@Override public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Attribute attribute = (Attribute) o;
if (!name.equals(attribute.name)) return false;
if (value != null ? !value.equals(attribute.value) : attribute.value != null) return false;
return true;
}
@Override public int hashCode() {
int result = name.hashCode();
result = 31 * result + (value != null ? value.hashCode() : 0);
return result;
}
/**
* The value of a custom enum attribute.
*/
public static class Enum {
/**
* The unique and machine-readable value for this enum value.
*/
public final String key;
/**
* The human-readable, and translated label for this value.
*/
public final String label;
public Enum(String key, String label) {
this.key = key;
this.label = label;
}
@Override
public String toString() {
return "[Enum key='" + key + "' value='" + label +"']";
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Enum anEnum = (Enum) o;
if (!key.equals(anEnum.key)) return false;
if (!label.equals(anEnum.label)) return false;
return true;
}
@Override
public int hashCode() {
int result = key.hashCode();
result = 31 * result + label.hashCode();
return result;
}
}
}
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