com.google.api.resourcenames.UntypedResourceName Maven / Gradle / Ivy
/*
* Copyright 2016, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.google.api.resourcenames;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableMap;
import java.util.Map;
/**
* A class to represent a {@link ResourceName} with an unknown format. This class in intended to
* support the case of a resource name string in an unexpected format - generated resource name
* classes with known formats should be preferred where possible.
*/
public class UntypedResourceName implements ResourceName {
private final String rawValue;
private volatile Map fieldValuesMap;
private UntypedResourceName(String rawValue) {
this.rawValue = Preconditions.checkNotNull(rawValue);
}
public static UntypedResourceName of(ResourceName resourceName) {
return new UntypedResourceName(resourceName.toString());
}
public static UntypedResourceName parse(String formattedString) {
return new UntypedResourceName(formattedString);
}
public static boolean isParsableFrom(String formattedString) {
return formattedString != null;
}
/* Returns a map with an empty String "" as the sole key, which maps to the raw value of this ResourceName. */
@Override
public Map getFieldValuesMap() {
if (fieldValuesMap == null) {
synchronized (this) {
if (fieldValuesMap == null) {
fieldValuesMap = ImmutableMap.of("", rawValue);
}
}
}
return fieldValuesMap;
}
/* Returns the raw value of this ResourceName iff fieldName.equals(""), else returns null. */
@Override
public String getFieldValue(String fieldName) {
return getFieldValuesMap().get("");
}
@Override
public String toString() {
return rawValue;
}
@Override
public boolean equals(Object o) {
if (o == this) {
return true;
}
if (o instanceof UntypedResourceName) {
UntypedResourceName that = (UntypedResourceName) o;
return this.rawValue.equals(that.rawValue);
}
return false;
}
@Override
public int hashCode() {
return rawValue.hashCode();
}
}