*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/eplv10.html
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.yangtools.yang.model.repo.api;
-import com.google.common.base.Optional;
-import com.google.common.base.Preconditions;
+import static java.util.Objects.requireNonNull;
+import com.google.common.annotations.Beta;
+import com.google.common.collect.Interner;
+import com.google.common.collect.Interners;
+import java.util.Optional;
+import javax.annotation.Nullable;
import org.opendaylight.yangtools.concepts.Identifier;
import org.opendaylight.yangtools.concepts.Immutable;
+import org.opendaylight.yangtools.yang.common.Revision;
+import org.opendaylight.yangtools.yang.common.YangConstants;
/**
- *
- * YANG Schema source identifier
- *
- * Simple transfer object represents identifier of source for YANG schema (module or submodule),
- * which consists of
- * <ul>
- * <li>YANG schema name ({@link #getName()}
- * <li>Module revision (optional) ({link {@link #getRevision()})
- * </ul>
- *
- * Source identifier is designated to be carry only necessary information
- * to look-up YANG model source and to be used by {@link AdvancedSchemaSourceProvider}
- * and similar.
- *
- * <b>Note:</b>On source retrieval layer it is impossible to distinguish
- * between YANG module and/or submodule unless source is present.
+ * Base class of YANG Schema source identifiers.
*
* <p>
- * (For further reference see: http://tools.ietf.org/html/rfc6020#section-5.2 and
- * http://tools.ietf.org/html/rfc6022#section-3.1 ).
- *
+ * Source identifiers are designated to be carry only necessary information to
+ * look-up YANG model source and to be used by various SchemaSourceProviders.
*
+ * <p>
+ * (For further reference see: http://tools.ietf.org/html/rfc6020#section-5.2
+ * and http://tools.ietf.org/html/rfc6022#section-3.1 ).
*/
-public final class SourceIdentifier implements Identifier, Immutable {
- private static final long serialVersionUID = 1L;
- private final String revision;
+@Beta
+public abstract class SourceIdentifier implements Identifier, Immutable {
+ private static final Interner<SourceIdentifier> INTERNER = Interners.newWeakInterner();
+ private static final long serialVersionUID = 2L;
+
+ private final Revision revision;
private final String name;
/**
+ * Creates new YANG Schema source identifier for sources without revision.
+ *
+ * @param name
+ * Name of schema
+ */
+ SourceIdentifier(final String name) {
+ this(name, (Revision) null);
+ }
+
+ /**
+ * Creates new YANG Schema source identifier.
*
+ * @param name
+ * Name of schema
+ * @param revision
+ * Revision of source, may be null
+ */
+ SourceIdentifier(final String name, @Nullable final Revision revision) {
+ this.name = requireNonNull(name);
+ this.revision = revision;
+ }
+
+ /**
* Creates new YANG Schema source identifier.
*
- * @param name Name of schema
- * @param formattedRevision Revision of source in format YYYY-mm-dd
+ * @param name
+ * Name of schema
+ * @param revision
+ * Revision of source, possibly not present
+ */
+ SourceIdentifier(final String name, final Optional<Revision> revision) {
+ this(name, revision.orElse(null));
+ }
+
+ /**
+ * Return an interned reference to a equivalent SemVerSourceIdentifier.
+ *
+ * @return Interned reference, or this object if it was interned.
*/
- public SourceIdentifier(final String name, final Optional<String> formattedRevision) {
- super();
- this.name = Preconditions.checkNotNull(name);
- this.revision = formattedRevision.orNull();
+ public SourceIdentifier intern() {
+ return INTERNER.intern(this);
}
/**
- * Returns model name
+ * Returns model name.
*
* @return model name
*/
*
* @return revision of source or null if revision was not supplied.
*/
- public String getRevision() {
- return revision;
- }
-
- @Override
- public int hashCode() {
- final int prime = 31;
- int result = 1;
- result = prime * result + ((name == null) ? 0 : name.hashCode());
- result = prime * result + ((revision == null) ? 0 : revision.hashCode());
- return result;
- }
-
- @Override
- public boolean equals(final Object obj) {
- if (this == obj) {
- return true;
- }
- if (obj == null) {
- return false;
- }
- if (getClass() != obj.getClass()) {
- return false;
- }
- SourceIdentifier other = (SourceIdentifier) obj;
- if (name == null) {
- if (other.name != null) {
- return false;
- }
- } else if (!name.equals(other.name)) {
- return false;
- }
- if (revision == null) {
- if (other.revision != null) {
- return false;
- }
- } else if (!revision.equals(other.revision)) {
- return false;
- }
- return true;
- }
-
- public static SourceIdentifier create(final String moduleName, final Optional<String> revision) {
- return new SourceIdentifier(moduleName, revision);
+ public Optional<Revision> getRevision() {
+ return Optional.ofNullable(revision);
}
/**
* Returns filename for this YANG module as specified in RFC 6020.
*
- * Returns filename in format
- * <code>name ['@' revision] '.yang'</code>
- * <p>
- * Where revision is date in format YYYY-mm-dd.
* <p>
+ * Returns filename in format <code>name ['@' revision] '.yang'</code>,
+ * where revision is date in format YYYY-mm-dd.
*
- * @see http://tools.ietf.org/html/rfc6020#section-5.2
+ * <p>
+ * @see <a href="http://tools.ietf.org/html/rfc6020#section-5.2">RFC6020</a>
*
* @return Filename for this source identifier.
*/
public String toYangFilename() {
- return toYangFileName(name, Optional.fromNullable(revision));
- }
-
- @Override
- public String toString() {
- return "SourceIdentifier [name=" + name + "@" + revision + "]";
+ return toYangFileName(name, Optional.ofNullable(revision));
}
/**
* Returns filename for this YANG module as specified in RFC 6020.
*
- * Returns filename in format
- * <code>moduleName ['@' revision] '.yang'</code>
- *
- * Where Where revision-date is in format YYYY-mm-dd.
+ * <p>
+ * Returns filename in format <code>moduleName ['@' revision] '.yang'</code>,
+ * where Where revision-date is in format YYYY-mm-dd.
*
* <p>
- * See
- * http://tools.ietf.org/html/rfc6020#section-5.2
+ * See http://tools.ietf.org/html/rfc6020#section-5.2
*
* @return Filename for this source identifier.
*/
- public static final String toYangFileName(final String moduleName, final Optional<String> revision) {
+ public static String toYangFileName(final String moduleName, final Optional<Revision> revision) {
StringBuilder filename = new StringBuilder(moduleName);
if (revision.isPresent()) {
filename.append('@');
filename.append(revision.get());
}
- filename.append(".yang");
+ filename.append(YangConstants.RFC6020_YANG_FILE_EXTENSION);
return filename.toString();
}
-
}
Code Review / yangtools.git / blobdiff