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| import static com.google.common.base.CaseFormat.LOWER_CAMEL;
import static com.google.common.base.CaseFormat.UPPER_CAMEL;
import static com.google.common.base.CharMatcher.JAVA_UPPER_CASE;
import static com.google.common.base.CharMatcher.anyOf;
import static com.google.common.base.Joiner.on;
import static com.google.common.collect.Iterables.transform;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
import com.google.common.base.Converter;
import com.google.common.base.Function;
import com.google.common.base.Joiner;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
@Component
@Scope(value = ConfigurableBeanFactory.SCOPE_PROTOTYPE)
public class I18nKeyImpl
implements I18nKey {
// TODO : Implement thread safe cache
public final static String NOT_FOUND_PREFIX = "!";
public final static String KEY_PREFIX = "[";
public final static String KEY_SUFFIX = "]";
public final static String PATH_SEPARATOR = ".";
private final static String SHORT_PATH = "short";
private final static String DESC_PATH = "desc";
private final static String EMPTY_PATH = "empty";
private final static String ERROR_PATH = "error";
private final static Converter<String, String> converter = UPPER_CAMEL.converterTo(LOWER_CAMEL);
private final static Function<String, String> toLowerCamel = new Function<String, String>() {
@Override
public String apply(String input) {
if (input == null)
return null;
else if ((JAVA_UPPER_CASE.countIn(input) + anyOf("_").countIn(input)) == input.length())
return input;
else
return converter.convert(input);
}
};
private String path;
private String module;
private String object;
private String group;
private String property;
private String value;
public I18nKey setPath(String path) {
this.path = path;
return this;
}
public I18nKey setModule(String module) {
this.module = module;
return this;
}
public I18nKey setObject(String object) {
this.object = object;
return this;
}
public I18nKey setGroup(String group) {
this.group = group;
return this;
}
public I18nKey setProperty(String property) {
this.property = property;
return this;
}
public I18nKey setValue(String value) {
this.value = value;
return this;
}
/**
* @return
*/
private String getPath() {
if (this.path != null)
return this.path;
else
return on(".").skipNulls().join(this.module, this.object, this.group, this.property, this.value);
}
/**
* Get the standard translation key.
*
* @return the string to convert
*/
public String getKey() {
return build(null);
}
/**
* Get the SHORT translation key.<br>
* <br>
* Generaly used into table headers or in minimal forms.
*
* @return the string to convert
*/
public String getShortKey() {
return build(SHORT_PATH);
}
/**
* Get the DESCRIPTION translation key.<br>
* <br>
* Generaly used to describe the thing. For example into tootips.
*
* @return the string to convert
*/
public String getDescriptionKey() {
return build(DESC_PATH);
}
/**
* Get the EMPTY translation key.<br>
* <br>
* Used to indicate how the object must be filled.
*
* @return the string to convert
*/
public String getEmptyKey() {
return build(EMPTY_PATH);
}
/**
* Get the ERROR translation key.<br>
* <br>
* Used to indicate that the value is incorrect
*
* @return the string to convert
*/
public String getErrorKey() {
return build(ERROR_PATH);
}
/**
* Internal method to encapsulate the key with the generic Square Brackets.
*
* @param path
* @return the string to convert
*/
public String build(final String suffix) {
String path = getPath();
if (Strings.emptyToNull(suffix) != null)
path += PATH_SEPARATOR + suffix;
StringBuffer key = new StringBuffer(KEY_PREFIX);
key.append(Joiner.on(PATH_SEPARATOR)
.join(transform(Splitter.on(PATH_SEPARATOR).split(path.toString()), toLowerCamel)));
key.append(KEY_SUFFIX);
return key.toString();
}
@Override
public String toString() {
return getKey();
}
} |
