thredds.cataloggen.config.DatasetNamer Maven / Gradle / Ivy
/*
* Copyright 1998-2009 University Corporation for Atmospheric Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
*
* Access and use of this software shall impose the following obligations
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* any fee or cost, to use, copy, modify, alter, enhance and distribute
* this software, and any derivative works thereof, and its supporting
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*/
package thredds.cataloggen.config;
import thredds.catalog.InvDatasetImpl;
import thredds.catalog.InvDataset;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
/**
* Title: Catalog Generator
* Description: Tool for generating THREDDS catalogs.
* Copyright: Copyright (c) 2001
* Company: UCAR/Unidata
*
* @author Ethan Davis
* @version 1.0
*/
public class DatasetNamer {
static private org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(DatasetNamer.class);
private InvDataset parentDataset = null;
// attributes of the datasetNamer element
private String name = null;
private boolean addLevel = false;
private DatasetNamerType type = null;
private String matchPattern = null;
protected Pattern regExpPattern;
private String substitutePattern = null;
private String attribContainer = null;
private String attribName = null;
// for validation
private boolean isValid = true;
private StringBuffer msgLog = new StringBuffer();
/**
* Constructor
*
* @param parentDs
* @param name
* @param addLevelBoolean
* @param typeName
* @param matchPattern
* @param substitutePattern
* @param attribContainer
* @param attribName
*/
public DatasetNamer( InvDataset parentDs, String name, String addLevelBoolean, String typeName,
String matchPattern, String substitutePattern, String attribContainer, String attribName)
{
this( parentDs, name, Boolean.parseBoolean(addLevelBoolean), DatasetNamerType.getType(typeName),
matchPattern, substitutePattern, attribContainer, attribName);
// Check that type is not null.
if ( this.getType() == null ) {
this.isValid = false;
msgLog.append( " ** DatasetNamer (1): invalid type [" + typeName + "] for datasetNamer [" + name + "]." );
}
}
/**
* Constructor
*
* @param parentDs
* @param name
* @param addLevel
* @param type
* @param matchPattern
* @param substitutePattern
* @param attribContainer
* @param attribName
*/
public DatasetNamer( InvDataset parentDs, String name, boolean addLevel, DatasetNamerType type,
String matchPattern, String substitutePattern, String attribContainer, String attribName)
{
this.parentDataset = parentDs;
this.name = name;
this.addLevel = addLevel;
if ( type == null ) {
this.isValid = false;
msgLog.append( " ** DatasetNamer (1): null type for datasetNamer [" + name + "]." );
}
this.type = type;
if ( matchPattern != null )
{
this.matchPattern = matchPattern;
if ( DatasetNamerType.REGULAR_EXPRESSION.equals( this.type ))
{
try
{
this.regExpPattern = java.util.regex.Pattern.compile( this.matchPattern );
}
catch ( PatternSyntaxException e )
{
isValid = false;
msgLog.append( " ** DatasetNamer (3): invalid matchPattern [" + this.matchPattern + "]." );
}
}
}
this.substitutePattern = substitutePattern;
this.attribContainer = attribContainer;
this.attribName = attribName;
}
/**
* Return the parent dataset of this DatasetNamer
*/
public InvDataset getParentDataset() {
return (this.parentDataset);
}
/**
* Return the name of this DatasetNamer.
*
* @return String name of this DatasetNamer
*/
public String getName() {
return (this.name);
}
/**
* Return the value of the addLevel attribute of this DatasetNamer.
*
* @return boolean addLevel attribute value for this DatasetNamer
*/
public boolean getAddLevel() {
return (this.addLevel);
}
/**
* Return the type attribute of this DatasetNamer.
*
* @return DatasetNamerType type value for this DatasetNamer
*/
public DatasetNamerType getType() {
return (this.type);
}
/**
* Return the value of the matchPattern attribute of this DatasetNamer.
*
* @return String value of matchPattern
*/
public String getMatchPattern() {
return (this.matchPattern);
}
/**
* Return the value of the substitutePattern attribute of this DatasetNamer.
*
* @return String - value of substitutePattern
*/
public String getSubstitutePattern() {
return (this.substitutePattern);
}
/**
* Return the value of the attribContainer attribute of this DatasetNamer.
*
* @return String - value of attribContainer
*/
public String getAttribContainer() {
return (this.attribContainer);
}
/**
* Return the value of the attribName attribute of this DatasetNamer.
*
* @return String - value of attribName
*/
public String getAttribName() {
return (this.attribName);
}
/**
* Validate this DatasetNamer object. Return true if valid, false if invalid.
*
* @param out StringBuffer with validation messages.
* @return boolean true if valid, false if invalid
*/
boolean validate(StringBuilder out) {
this.isValid = true;
// If log from construction has content, append to validation output msg.
if (this.msgLog.length() > 0) {
out.append(this.msgLog);
}
// Check that name is not null (it can be an empty string).
if (this.getName() == null) {
this.isValid = false;
out.append(" ** DatasetNamer (1): null value for name is not valid.");
}
// Check that addLevel is not null.
// boolean can't be null
//if ( this.getAddLevel() == null)
//{
// this.isValid = false;
// out.append(" ** DatasetNamer (2): null value for addLevel is not valid.");
//}
// Check that type is not null.
if (this.getType() == null) {
this.isValid = false;
out.append(" ** DatasetNamer (3): null value for type is not valid (set with bad string?).");
}
if ( this.getType() == DatasetNamerType.REGULAR_EXPRESSION
&& ( this.getMatchPattern() == null || this.getSubstitutePattern() == null ))
{
this.isValid = false;
out.append(" ** DatasetNamer (4): invalid datasetNamer <" + this.getName() + ">;" +
" type is " + this.getType().toString() + ": matchPattern(" + this.getMatchPattern() + ") and substitutionPattern(" + this.getSubstitutePattern() + ") " +
"must not be null.");
}
if ( this.getType() == DatasetNamerType.DODS_ATTRIBUTE
&& ( this.getAttribContainer() == null || this.getAttribName() == null ) )
{
this.isValid = false;
out.append(" ** DatasetNamer (5): invalid datasetNamer <" + this.getName() + ">;" +
" type is " + this.getType().toString() + ": attriuteContainer(" + this.getAttribContainer() + ") and attributeName(" + this.getAttribName() + ") must not be null.");
}
return (this.isValid);
}
/**
* string representation
*/
public String toString() {
StringBuffer tmp = new StringBuffer();
tmp.append("DatasetNamer[name:<" + this.getName() + "> addLevel:<" +
this.getAddLevel() + "> type:<" + this.getType() +
"> matchPattern:<" + this.getMatchPattern() +
"> substitutePatter:<" + this.getSubstitutePattern() +
"> attribContainer:<" + this.getAttribContainer() +
"> attribName:<" + this.getAttribName() + ">]");
return (tmp.toString());
}
/**
* Try to name the given dataset.
*/
public boolean nameDataset(InvDatasetImpl dataset) {
if (this.type == DatasetNamerType.REGULAR_EXPRESSION) {
return (this.nameDatasetRegExp(dataset));
} /* else if (this.type == DatasetNamerType.DODS_ATTRIBUTE) {
return (this.nameDatasetDodsAttrib(dataset));
} */
else {
String tmpMsg = "This DatasetNamer <" + this.getName() + "> has unsupported type <" + this.type.toString() + ">.";
logger.error("nameDataset(): " + tmpMsg);
throw new IllegalStateException(tmpMsg);
}
}
/**
* Try to name the given dataset.
*/
public boolean nameDatasetList(java.util.List datasetList)
throws java.lang.Exception {
boolean returnValue = false;
InvDatasetImpl curDataset = null;
for (int i = 0; i < datasetList.size(); i++) {
curDataset = (InvDatasetImpl) datasetList.get(i);
returnValue &= this.nameDataset(curDataset);
}
return (returnValue);
}
/** */
private boolean nameDatasetRegExp(InvDatasetImpl dataset)
{
boolean isMatch;
Matcher matcher;
// Test for a match on the urlPath
if (dataset.getUrlPath() != null) {
logger.debug("nameDatasetRegExp(): try naming on urlPath <{}>", dataset.getUrlPath());
matcher = this.regExpPattern.matcher( dataset.getUrlPath() );
isMatch = matcher.find();
} else {
matcher = this.regExpPattern.matcher( dataset.getName() );
isMatch = matcher.find();
}
if ( isMatch) {
// Test for substitution.
StringBuffer resultingName = new StringBuffer();
matcher.appendReplacement( resultingName, this.substitutePattern );
resultingName.delete( 0, matcher.start() );
if ( resultingName.length() != 0) {
logger.debug( "nameDatasetRegExp(): Setting name to \"" + resultingName + "\".");
dataset.setName( resultingName.toString());
return true;
} else {
logger.debug( "nameDatasetRegExp(): No name for regEx substitution.");
return false;
}
}
if (logger.isDebugEnabled())
logger.debug("nameDatasetRegExp(): Neither URL <" + dataset.getUrlPath() + "> or name <" +
dataset.getName() + "> matched pattern <" + this.matchPattern + "> .");
return false;
}
/**
private boolean nameDatasetDodsAttrib(InvDatasetImpl dataset)
// throws java.lang.Exception
{
DConnect dodsConnection = null;
DAS das = null;
boolean acceptDeflate = true;
String newDatasetName = null;
//-----
// Test that this dataset has a DODS type service.
//-----
InvAccess access = dataset.getAccess(ServiceType.DODS);
if (access == null) {
logger.warn("nameDatasetDodsAttrib(): dataset is not DODS accessible and so cannot be named using DODS attributes.");
return (false);
}
//-----
// Connect to DODS dataset.
//-----
String url = access.getStandardUrlName();
try {
dodsConnection = new DConnect(url, acceptDeflate);
}
catch (java.io.FileNotFoundException e) {
logger.error("nameDatasetDodsAttrib(): URL <" + url + "> not found: " + e.getMessage());
return (false);
}
catch (Exception e) // java.lang.NullPointerException
{
logger.error("nameDatasetDodsAttrib(): Failed DODS connect: " + e.getMessage());
return (false);
}
logger.debug("nameDatasetDodsAttrib(): Got DODS Connect ", url);
//-----
// Get the DAS
//-----
try {
das = dodsConnection.getDAS();
}
catch (DAP2Exception e) // DODSException and DASException
{
logger.error("nameDatasetDodsAttrib(): Failed to get DAS: " + e.getMessage());
return (false);
}
catch (opendap.dap.parsers.ParseException e) {
logger.error("nameDatasetDodsAttrib(): Failed to get DAS: " + e.getMessage());
return (false);
}
catch (Exception e) // java.net.MalformedURLException, java.io.IOException
{
logger.error("nameDatasetDodsAttrib(): Failed to get DAS: " + e.getMessage());
return (false);
}
logger.debug("nameDatasetDodsAttrib(): Got DAS");
//-----
// Get attribute value from attribute container.
//-----
AttributeTable dodsAttTable = null;
try {
dodsAttTable = das.getAttributeTable(this.attribContainer);
if (dodsAttTable != null) {
Attribute desiredAtt =
dodsAttTable.getAttribute(this.attribName);
// Check that desired attribute is a string
if (desiredAtt.getType() == opendap.dap.Attribute.STRING) {
java.util.Enumeration enumValues = desiredAtt.getValues();
if (enumValues.hasMoreElements()) {
newDatasetName = (String) enumValues.nextElement();
// Java DODS string attributes are enclosed in double quotes.
// Remove them.
newDatasetName = newDatasetName.substring(1, newDatasetName.length() - 1);
if (enumValues.hasMoreElements()) {
// If attribute has more than one value, return false.
logger.warn("nameDatasetDodsAttrib(): attribute has multiple values, only using first value <" + newDatasetName + ">");
dataset.setName(newDatasetName);
return (true);
}
// Desired attribute is a string and contains only one value,
// set the dataset name and return true.
logger.debug("nameDatasetDodsAttrib(): setting dataset name to <{}>.", newDatasetName);
dataset.setName(newDatasetName);
return (true);
} else {
// If attribute has no values, return false.
logger.debug("nameDatasetDodsAttrib(): attribute has no value");
return (false);
}
} else {
// Desired attribute is not a string, return false.
logger.debug("nameDatasetDodsAttrib(): attribute value is not a string.");
return (false);
}
} else {
// No such attribute container, return false.
logger.debug("nameDatasetDodsAttrib(): attribute container does not exist.");
return (false);
}
} catch (NoSuchAttributeException e) {
// No such attribute container, return false.
logger.debug("nameDatasetDodsAttrib(): attribute container does not exist.");
return (false);
}
} */
}
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