org.openstack4j.model.common.header.IfCondition Maven / Gradle / Ivy
package org.openstack4j.model.common.header;
import static com.google.common.base.Preconditions.checkNotNull;
import java.util.Date;
import org.openstack4j.openstack.internal.Parser;
/**
* A delegate class which contains calls to create various conditional header options
*
* @author Jeremy Unruh
*/
public class IfCondition implements HeaderOption {
private String name;
private Object value;
protected IfCondition(String name) {
this.name = name;
}
protected IfCondition(String name, Object value) {
this(name);
this.value = value;
}
/**
* Determines if the remote data has been modified since the specified date
*
* @param milliseconds the date in milliseconds
* @return if modified since condition
*/
public static IfModifiedSince modifiedSince(long milliseconds) {
return new IfModifiedSince(new Date(milliseconds));
}
/**
* Determines if the remote data has been un-modified since the specified date
*
* @param milliseconds the date in milliseconds
* @return if un-modified since condition
*/
public static IfUnModifiedSince unModifiedSince(long milliseconds) {
return new IfUnModifiedSince(new Date(milliseconds));
}
/**
* Determines if the remote data has been un-modified since the specified date
*
* @param date the date since un-modified
* @return if un-modified since condition
*/
public static IfUnModifiedSince unModifiedSince(Date date) {
return new IfUnModifiedSince(date);
}
/**
* Determines if the remote data has been modified since the specified date
*
* @param date the date condition
* @return if modified since condition
*/
public static IfModifiedSince modifiedSince(Date date) {
checkNotNull(date, "Date must not be null");
return new IfModifiedSince(date);
}
/**
* Compares the ETag as a condition to determine if the remote data does not match the checksum
*
* @param matchCondition the match condition (ETag)
* @return the if none match condition
* @see http://www.ietf.org/rfc/rfc2616.txt
*/
public static IfNoneMatch noneMatch(String matchCondition) {
checkNotNull(matchCondition, "Match condition must not be null");
return new IfNoneMatch(matchCondition);
}
/**
* Compares the ETag as a condition to determine if the remote data matches the checksum
*
* @param matchValue the match value (ETag)
* @return the if match condition
* @see http://www.ietf.org/rfc/rfc2616.txt
*/
public static IfMatch match(String matchValue) {
checkNotNull(matchValue, "Match value must not be null");
return new IfMatch(matchValue);
}
@Override
public HeaderNameValue toHeader() {
return new HeaderNameValue(name, value);
}
public static class IfModifiedSince extends IfCondition {
private static final String IF_MODIFIED_SINCE = "If-Modified-Since";
IfModifiedSince(Date date) {
super(IF_MODIFIED_SINCE, Parser.toRFC1123(date));
}
}
public static class IfUnModifiedSince extends IfCondition {
private static final String IF_UNMODIFIED_SINCE = "If-Unmodified-Since";
IfUnModifiedSince(Date date) {
super(IF_UNMODIFIED_SINCE, Parser.toRFC1123(date));
}
}
public static class IfNoneMatch extends IfCondition {
private static final String IF_NONE_MATCH = "If-None-Match";
IfNoneMatch(String condition) {
super(IF_NONE_MATCH, condition);
}
}
public static class IfMatch extends IfCondition {
private static final String IF_MATCH = "If-Match";
IfMatch(String matchValue) {
super(IF_MATCH, matchValue);
}
}
}