📄 cmsflexcachekey.java
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// match only session attributes listed in cache directives
Iterator i = m_session.iterator();
while (i.hasNext()) {
String name = (String)i.next();
Object val = keySession.getAttribute(name);
if (val != null) {
found = true;
buf.append(name);
buf.append("=");
buf.append(val);
if (i.hasNext()) {
buf.append(",");
}
}
}
}
if (found) {
buf.append(");");
str.append(buf);
}
}
if (m_schemes != null) {
String s = key.getScheme();
if ((m_schemes.size() > 0) && (!m_schemes.contains(s))) {
return null;
}
appendKeyValue(str, CACHE_08_SCHEMES, s);
}
if (m_ports != null) {
Integer i = key.getPort();
if ((m_ports.size() > 0) && (!m_ports.contains(i))) {
return null;
}
str.append(CACHE_09_PORTS);
str.append("=(");
str.append(i);
str.append(");");
}
if (m_timeout > 0) {
str.append(CACHE_06_TIMEOUT);
str.append("=(");
str.append(m_timeout);
str.append(");");
}
if (str.length() > 0) {
return str.toString();
} else {
return null;
}
}
/**
* @see java.lang.Object#toString()
*
* @return a complete String representation for this key
*/
public String toString() {
StringBuffer str = new StringBuffer(100);
if (m_always < 0) {
str.append(CACHE_01_NEVER);
if (m_parseError) {
str.append(";");
str.append(CACHE_11_PARSE_ERROR);
}
return str.toString();
}
if (m_noparams != null) {
// add "no-cachable" parameters
str.append(CACHE_05_NO_PARAMS);
if (m_noparams.size() == 0) {
str.append(";");
} else {
str.append("=(");
Iterator i = m_noparams.iterator();
while (i.hasNext()) {
Object o = i.next();
str.append(o);
if (i.hasNext()) {
str.append(",");
}
}
str.append(");");
}
}
if (m_always > 0) {
str.append(CACHE_00_ALWAYS);
if (m_parseError) {
str.append(";");
str.append(CACHE_11_PARSE_ERROR);
}
return str.toString();
}
if (m_uri != null) {
// add uri
appendKeyValue(str, CACHE_02_URI, m_uri);
}
if (m_site != null) {
// add site
appendKeyValue(str, CACHE_17_SITE, m_site);
}
if (m_element != null) {
// add element
appendKeyValue(str, CACHE_14_ELEMENT, m_element);
}
if (m_locale != null) {
// add locale
appendKeyValue(str, CACHE_15_LOCALE, m_locale);
}
if (m_encoding != null) {
// add encoding
appendKeyValue(str, CACHE_16_ENCODING, m_encoding);
}
if (m_ip != null) {
// add ip
appendKeyValue(str, CACHE_13_IP, m_ip);
}
if (m_user != null) {
// add user
appendKeyValue(str, CACHE_03_USER, m_user);
}
if (m_params != null) {
// add parameters
str.append(CACHE_04_PARAMS);
if (m_params.size() == 0) {
str.append(";");
} else {
str.append("=(");
Iterator i = m_params.iterator();
while (i.hasNext()) {
Object o = i.next();
if (I_CmsResourceLoader.PARAMETER_ELEMENT.equals(o)) {
continue;
}
str.append(o);
if (i.hasNext()) {
str.append(",");
}
}
str.append(");");
}
}
if (m_session != null) {
// add session variables
str.append(CACHE_07_SESSION);
str.append("=(");
Iterator i = m_session.iterator();
while (i.hasNext()) {
Object o = i.next();
str.append(o);
if (i.hasNext()) {
str.append(",");
}
}
str.append(");");
}
if (m_timeout >= 0) {
// add timeout
str.append(CACHE_06_TIMEOUT);
str.append("=(");
str.append(m_timeout);
str.append(");");
}
if (m_schemes != null) {
// add schemes
str.append(CACHE_08_SCHEMES);
if (m_schemes.size() == 0) {
str.append(";");
} else {
str.append("=(");
Iterator i = m_schemes.iterator();
while (i.hasNext()) {
str.append(i.next());
if (i.hasNext()) {
str.append(",");
}
}
str.append(");");
}
}
if (m_ports != null) {
// add ports
str.append(CACHE_09_PORTS);
if (m_ports.size() == 0) {
str.append(";");
} else {
str.append("=(");
Iterator i = m_ports.iterator();
while (i.hasNext()) {
str.append(i.next());
if (i.hasNext()) {
str.append(",");
}
}
str.append(");");
}
}
if (m_parseError) {
str.append(CACHE_11_PARSE_ERROR);
}
return str.toString();
}
/**
* Returns the resource.<p>
*
* @return the resource
*/
protected String getResource() {
return m_resource;
}
/**
* Returns the timeout.<p>
*
* @return the timeout
*/
protected long getTimeout() {
return m_timeout;
}
/**
* Returns the variation.<p>
*
* @return the variation
*/
protected String getVariation() {
return m_variation;
}
/**
* Sets the variation.<p>
*
* @param variation the variation to set
*/
protected void setVariation(String variation) {
m_variation = variation;
}
/**
* Parse a String in the Flex cache language and construct
* the key data structure from this.<p>
*
* @param key the String to parse (usually read from the file property "cache")
*/
private void parseFlexKey(String key) {
List tokens = CmsStringUtil.splitAsList(key, ';', false);
Iterator i = tokens.iterator();
try {
while (i.hasNext()) {
String t = (String)i.next();
String k = null;
String v = null;
int idx = t.indexOf('=');
if (idx >= 0) {
k = t.substring(0, idx).trim();
if (t.length() > idx) {
v = t.substring(idx + 1).trim();
}
} else {
k = t.trim();
}
m_always = 0;
if (LOG.isDebugEnabled()) {
LOG.debug(Messages.get().getBundle().key(Messages.LOG_FLEXCACHEKEY_PARSE_FLEXKEY_3, t, k, v));
}
switch (CACHE_COMMANDS.indexOf(k)) {
case 0: // always
case 12: // true
m_always = 1;
// continue processing (make sure we find a "never" behind "always")
break;
case 1: // never
case 10: // false
m_always = -1;
// no need for any further processing
return;
case 2: // uri
m_uri = IS_USED; // marks m_uri as being used
break;
case 3: // user
m_user = IS_USED; // marks m_user as being used
break;
case 4: // params
if (v!= null) {
m_params = parseValueList(v);
} else {
m_params = Collections.EMPTY_SET;
}
if (m_params.contains(I_CmsResourceLoader.PARAMETER_ELEMENT)) {
// workaround for element setting by parameter in OpenCms < 6.0
m_element = IS_USED;
m_params.remove(I_CmsResourceLoader.PARAMETER_ELEMENT);
if (m_params.size() == 0) {
m_params = null;
}
}
break;
case 5: // no-params
if (v != null) {
// no-params are present
m_noparams = parseValueList(v);
} else {
// never cache with parameters
m_noparams = Collections.EMPTY_SET;
}
break;
case 6: // timeout
m_timeout = Integer.parseInt(v);
break;
case 7: // session
m_session = parseValueList(v);
if (m_session.size() <= 0) {
// session must have at last one variable set
m_parseError = true;
}
break;
case 8: // schemes
m_schemes = parseValueList(v);
break;
case 9: // ports
m_ports = parseValueList(v);
break;
case 11: // previous parse error - ignore
break;
case 13: // ip
m_ip = IS_USED; // marks ip as being used
break;
case 14: // element
m_element = IS_USED;
break;
case 15: // locale
m_locale = IS_USED;
break;
case 16: // encoding
m_encoding = IS_USED;
break;
case 17: // site
m_site = IS_USED;
break;
default: // unknown directive, throw error
m_parseError = true;
}
}
} catch (Exception e) {
// any Exception here indicates a parsing error
if (LOG.isDebugEnabled()) {
LOG.debug(Messages.get().getBundle().key(Messages.LOG_FLEXCACHEKEY_PARSE_ERROR_1, e.toString()));
}
m_parseError = true;
}
if (m_parseError) {
// If string is invalid set cache to "never"
m_always = -1;
}
}
/**
* A helper method for the parsing process which parses
* Strings like groups=(a, b, c).<p>
*
* @param value the String to parse
* @return a Map that contains of the parsed values, only the keyset of the Map is needed later
*/
private Set parseValueList(String value) {
if (value.charAt(0) == '(') {
value = value.substring(1);
}
int len = value.length() - 1;
if (value.charAt(len) == ')') {
value = value.substring(0, len);
}
if (value.charAt(len - 1) == ',') {
value = value.substring(0, len - 1);
}
if (LOG.isDebugEnabled()) {
LOG.debug(Messages.get().getBundle().key(Messages.LOG_FLEXCACHEKEY_PARSE_VALUES_1, value));
}
List tokens = CmsStringUtil.splitAsList(value, ',', true);
Set result = new HashSet();
result.addAll(tokens);
return result;
}
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