+++ /dev/null
-package org.argeo.api.gcr;
-
-import java.net.URI;
-import java.net.URISyntaxException;
-import java.time.Instant;
-import java.time.format.DateTimeParseException;
-import java.util.UUID;
-
-/**
- * Minimal standard attribute types that MUST be supported. All related classes
- * belong to java.base and can be implicitly derived form a given
- * <code>String<code>.
- */
-public enum StandardAttributeType {
- BOOLEAN(Boolean.class, new BooleanFormatter()), //
- INTEGER(Integer.class, new IntegerFormatter()), //
- LONG(Long.class, new LongFormatter()), //
- DOUBLE(Double.class, new DoubleFormatter()), //
- // we do not support short and float, like recent additions to Java
- // (e.g. optional primitives)
- INSTANT(Instant.class, new InstantFormatter()), //
- UUID(UUID.class, new UuidFormatter()), //
- URI(URI.class, new UriFormatter()), //
- STRING(String.class, new StringFormatter()), //
- ;
-
- private <T> StandardAttributeType(Class<T> clss, AttributeFormatter<T> formatter) {
- this.clss = clss;
- this.formatter = formatter;
- }
-
- private final Class<?> clss;
- private final AttributeFormatter<?> formatter;
-
- public Class<?> getClss() {
- return clss;
- }
-
- public AttributeFormatter<?> getFormatter() {
- return formatter;
- }
-
- public static Object parse(String str) {
- if (str == null)
- throw new IllegalArgumentException("String cannot be null");
- // order IS important
- try {
- if (str.length() == 4 || str.length() == 5)
- return BOOLEAN.getFormatter().parse(str);
- } catch (IllegalArgumentException e) {
- // silent
- }
- try {
- return INTEGER.getFormatter().parse(str);
- } catch (IllegalArgumentException e) {
- // silent
- }
- try {
- return LONG.getFormatter().parse(str);
- } catch (IllegalArgumentException e) {
- // silent
- }
- try {
- return DOUBLE.getFormatter().parse(str);
- } catch (IllegalArgumentException e) {
- // silent
- }
- try {
- return INSTANT.getFormatter().parse(str);
- } catch (IllegalArgumentException e) {
- // silent
- }
- try {
- if (str.length() == 36)
- return UUID.getFormatter().parse(str);
- } catch (IllegalArgumentException e) {
- // silent
- }
- try {
- java.net.URI uri = (java.net.URI) URI.getFormatter().parse(str);
- if (uri.getScheme() != null)
- return uri;
- String path = uri.getPath();
- if (path.indexOf('/') >= 0)
- return uri;
- // if it is not clearly a path, we will consider it as a string
- // because their is no way to distinguish between 'any_string'
- // and 'any_file_name'.
- // Note that providing ./any_file_name would result in an equivalent URI
- } catch (IllegalArgumentException e) {
- // silent
- }
-
- // default
- return STRING.getFormatter().parse(str);
- }
-
- static class BooleanFormatter implements AttributeFormatter<Boolean> {
-
- /**
- * @param str must be exactly equals to either 'true' or 'false' (different
- * contract than {@link Boolean#parseBoolean(String)}.
- */
- @Override
- public Boolean parse(String str) throws IllegalArgumentException {
- if ("true".equals(str))
- return Boolean.TRUE;
- if ("false".equals(str))
- return Boolean.FALSE;
- throw new IllegalArgumentException("Argument is neither 'true' or 'false' : " + str);
- }
- }
-
- static class IntegerFormatter implements AttributeFormatter<Integer> {
- @Override
- public Integer parse(String str) throws NumberFormatException {
- return Integer.parseInt(str);
- }
- }
-
- static class LongFormatter implements AttributeFormatter<Long> {
- @Override
- public Long parse(String str) throws NumberFormatException {
- return Long.parseLong(str);
- }
- }
-
- static class DoubleFormatter implements AttributeFormatter<Double> {
-
- @Override
- public Double parse(String str) throws NumberFormatException {
- return Double.parseDouble(str);
- }
- }
-
- static class InstantFormatter implements AttributeFormatter<Instant> {
-
- @Override
- public Instant parse(String str) throws IllegalArgumentException {
- try {
- return Instant.parse(str);
- } catch (DateTimeParseException e) {
- throw new IllegalArgumentException("Cannot parse '" + str + "' as an instant", e);
- }
- }
- }
-
- static class UuidFormatter implements AttributeFormatter<UUID> {
-
- @Override
- public UUID parse(String str) throws IllegalArgumentException {
- return java.util.UUID.fromString(str);
- }
- }
-
- static class UriFormatter implements AttributeFormatter<URI> {
-
- @Override
- public URI parse(String str) throws IllegalArgumentException {
- try {
- return new URI(str);
- } catch (URISyntaxException e) {
- throw new IllegalArgumentException("Cannot parse " + str + " as an URI.", e);
- }
- }
-
- }
-
- static class StringFormatter implements AttributeFormatter<String> {
-
- @Override
- public String parse(String str) {
- return str;
- }
-
- @Override
- public String format(String obj) {
- return obj;
- }
-
- }
-
-}
projects / lgpl / argeo-commons.git / blobdiff