package org.opendaylight.yangtools.yang.model.api;
import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkState;
import static java.util.Objects.requireNonNull;
import com.google.common.base.MoreObjects;
import com.google.common.base.MoreObjects.ToStringHelper;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;
-import com.google.common.collect.Lists;
import com.google.common.collect.UnmodifiableIterator;
-import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.Objects;
-import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
+import org.eclipse.jdt.annotation.NonNull;
import org.opendaylight.yangtools.concepts.Immutable;
import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier;
+import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
+import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Descendant;
/**
* Represents unique path to the every node inside the module.
}
@Override
- public AbsoluteSchemaPath createChild(final QName qname) {
- return new AbsoluteSchemaPath(this, requireNonNull(qname));
+ public AbsoluteSchemaPath createChild(final QName element) {
+ return new AbsoluteSchemaPath(this, requireNonNull(element));
}
}
}
@Override
- public RelativeSchemaPath createChild(final QName qname) {
- return new RelativeSchemaPath(this, requireNonNull(qname));
+ public RelativeSchemaPath createChild(final QName element) {
+ return new RelativeSchemaPath(this, requireNonNull(element));
}
}
- @SuppressWarnings("rawtypes")
- private static final AtomicReferenceFieldUpdater<SchemaPath, ImmutableList> LEGACYPATH_UPDATER =
- AtomicReferenceFieldUpdater.newUpdater(SchemaPath.class, ImmutableList.class, "legacyPath");
-
/**
* Shared instance of the conceptual root schema node.
*/
- public static final SchemaPath ROOT = new AbsoluteSchemaPath(null, null);
+ public static final @NonNull SchemaPath ROOT = new AbsoluteSchemaPath(null, null);
/**
* Shared instance of the "same" relative schema node.
*/
- public static final SchemaPath SAME = new RelativeSchemaPath(null, null);
+ public static final @NonNull SchemaPath SAME = new RelativeSchemaPath(null, null);
/**
* Parent path.
*/
private final int hash;
- /**
- * Cached legacy path, filled-in when {@link #getPath()} or {@link #getPathTowardsRoot()}
- * is invoked.
- */
- private volatile ImmutableList<QName> legacyPath;
-
SchemaPath(final SchemaPath parent, final QName qname) {
this.parent = parent;
this.qname = qname;
hash = tmp;
}
- private ImmutableList<QName> getLegacyPath() {
- ImmutableList<QName> ret = legacyPath;
- if (ret == null) {
- final List<QName> tmp = new ArrayList<>();
- for (QName qname : getPathTowardsRoot()) {
- tmp.add(qname);
- }
- ret = ImmutableList.copyOf(Lists.reverse(tmp));
- LEGACYPATH_UPDATER.lazySet(this, ret);
- }
-
- return ret;
- }
-
/**
- * Returns the complete path to schema node.
+ * Constructs new instance of this class with the concrete path.
*
- * @return list of <code>QName</code> instances which represents complete
- * path to schema node
+ * @param path
+ * list of QName instances which specifies exact path to the
+ * module node
+ * @param absolute
+ * boolean value which specifies if the path is absolute or
+ * relative
*
- * @deprecated Use {@link #getPathFromRoot()} instead.
+ * @return A SchemaPath instance.
*/
- @Deprecated
- public List<QName> getPath() {
- return getLegacyPath();
+ public static @NonNull SchemaPath create(final Iterable<QName> path, final boolean absolute) {
+ return (absolute ? ROOT : SAME).createChild(path);
}
/**
* Constructs new instance of this class with the concrete path.
*
- * @param path
- * list of QName instances which specifies exact path to the
- * module node
* @param absolute
* boolean value which specifies if the path is absolute or
* relative
+ * @param element
+ * a single QName which specifies exact path to the
+ * module node
*
* @return A SchemaPath instance.
*/
- public static SchemaPath create(final Iterable<QName> path, final boolean absolute) {
- final SchemaPath parent = absolute ? ROOT : SAME;
- return parent.createChild(path);
+ public static @NonNull SchemaPath create(final boolean absolute, final QName element) {
+ return (absolute ? ROOT : SAME).createChild(element);
}
/**
*
* @return A SchemaPath instance.
*/
- public static SchemaPath create(final boolean absolute, final QName... path) {
+ public static @NonNull SchemaPath create(final boolean absolute, final QName... path) {
return create(Arrays.asList(path), absolute);
}
* @param relative Relative path
* @return A new child path
*/
- public SchemaPath createChild(final Iterable<QName> relative) {
+ public @NonNull SchemaPath createChild(final Iterable<QName> relative) {
if (Iterables.isEmpty(relative)) {
return this;
}
SchemaPath parentPath = this;
- for (QName qname : relative) {
- parentPath = parentPath.createChild(qname);
+ for (QName item : relative) {
+ parentPath = parentPath.createChild(item);
}
return parentPath;
* @param relative Relative SchemaPath
* @return A new child path
*/
- public SchemaPath createChild(final SchemaPath relative) {
+ public @NonNull SchemaPath createChild(final SchemaPath relative) {
checkArgument(!relative.isAbsolute(), "Child creation requires relative path");
return createChild(relative.getPathFromRoot());
}
* @param element Relative SchemaPath elements
* @return A new child path
*/
- public abstract SchemaPath createChild(QName element);
+ public abstract @NonNull SchemaPath createChild(QName element);
/**
* Create a child path based on concatenation of this path and additional
* @param elements Relative SchemaPath elements
* @return A new child path
*/
- public SchemaPath createChild(final QName... elements) {
+ public @NonNull SchemaPath createChild(final QName... elements) {
return createChild(Arrays.asList(elements));
}
* @return list of <code>qname</code> instances which represents
* path from the root to the schema node.
*/
- public Iterable<QName> getPathFromRoot() {
- return getLegacyPath();
+ public List<QName> getPathFromRoot() {
+ if (qname == null) {
+ return ImmutableList.of();
+ }
+ return parent == null ? ImmutableList.of(qname) : new PathFromRoot(this);
}
/**
* path from the schema node towards the root.
*/
public Iterable<QName> getPathTowardsRoot() {
- return () -> new UnmodifiableIterator<QName>() {
+ return () -> new UnmodifiableIterator<>() {
private SchemaPath current = SchemaPath.this;
@Override
final QName ret = current.qname;
current = current.parent;
return ret;
- } else {
- throw new NoSuchElementException("No more elements available");
}
+
+ throw new NoSuchElementException("No more elements available");
}
};
}
*/
public abstract boolean isAbsolute();
+ /**
+ * Return this path as a {@link SchemaNodeIdentifier}.
+ *
+ * @return A SchemaNodeIdentifier.
+ * @throws IllegalStateException if this path is empty
+ */
+ public final SchemaNodeIdentifier asSchemaNodeIdentifier() {
+ checkState(qname != null, "Cannot convert empty %s", this);
+ final List<QName> path = getPathFromRoot();
+ return isAbsolute() ? Absolute.of(path) : Descendant.of(path);
+ }
+
+ /**
+ * Return this path as an {@link Absolute} SchemaNodeIdentifier.
+ *
+ * @return An SchemaNodeIdentifier.
+ * @throws IllegalStateException if this path is empty or is not absolute.
+ */
+ public final Absolute asAbsolute() {
+ final SchemaNodeIdentifier ret = asSchemaNodeIdentifier();
+ if (ret instanceof Absolute) {
+ return (Absolute) ret;
+ }
+ throw new IllegalStateException("Path " + this + " is relative");
+ }
+
+ /**
+ * Return this path as an {@link Descendant} SchemaNodeIdentifier.
+ *
+ * @return An SchemaNodeIdentifier.
+ * @throws IllegalStateException if this path is empty or is not relative.
+ */
+ public final Descendant asDescendant() {
+ final SchemaNodeIdentifier ret = asSchemaNodeIdentifier();
+ if (ret instanceof Descendant) {
+ return (Descendant) ret;
+ }
+ throw new IllegalStateException("Path " + this + " is absolute");
+ }
+
@Override
public final int hashCode() {
return hash;
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