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GeezerVison is showing github.com — utPLSQL-java-api/src/main/java/org/utplsql/api/Version.java at v3.1.1 · utPLSQL/utPLSQL-java-api

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package org.utplsql.api;
import org.utplsql.api.exception.InvalidVersionException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/** Simple class to parse utPLSQL Version-information and provide the separate version-numbers
*
* @author pesse
*/
public class Version implements Comparable<Version> {
private final String origString;
private final Integer major;
private final Integer minor;
private final Integer bugfix;
private final Integer build;
private final boolean valid;
public Version( String versionString ) {
assert versionString != null;
this.origString = versionString.trim();
Pattern p = Pattern.compile("([0-9]+)\\.?([0-9]+)?\\.?([0-9]+)?\\.?([0-9]+)?");
Matcher m = p.matcher(origString);
Integer major = null;
Integer minor = null;
Integer bugfix = null;
Integer build = null;
boolean valid = false;
try {
if (m.find()) {
if (m.group(1) != null )
major = Integer.valueOf(m.group(1));
if (m.group(2) != null )
minor = Integer.valueOf(m.group(2));
if (m.group(3) != null )
bugfix = Integer.valueOf(m.group(3));
if (m.group(4) != null )
build = Integer.valueOf(m.group(4));
// We need a valid major version as minimum requirement for a Version object to be valid
valid = major != null;
}
}
catch ( NumberFormatException e )
{
valid = false;
}
this.major = major;
this.minor = minor;
this.bugfix = bugfix;
this.build = build;
this.valid = valid;
}
@Override
public String toString() {
return origString;
}
public Integer getMajor() {
return major;
}
public Integer getMinor() {
return minor;
}
public Integer getBugfix() {
return bugfix;
}
public Integer getBuild() {
return build;
}
public boolean isValid() {
return valid;
}
/** Returns a normalized form of the parsed version information
*
* @return
*/
public String getNormalizedString()
{
if ( isValid() ) {
StringBuilder sb = new StringBuilder();
sb.append(String.valueOf(major));
if ( minor != null )
sb.append(".").append(String.valueOf(minor));
if ( bugfix != null )
sb.append(".").append(String.valueOf(bugfix));
if ( build != null )
sb.append(".").append(String.valueOf(build));
return sb.toString();
}
else
return "invalid";
}
private int compareToWithNulls( Integer i1, Integer i2 ) {
if ( i1 == null && i2 == null )
return 0;
else if ( i1 == null )
return -1;
else if ( i2 == null )
return 1;
else return i1.compareTo(i2);
}
@Override
public int compareTo(Version o) {
int curResult;
if ( isValid() && o.isValid() ) {
curResult = compareToWithNulls(getMajor(), o.getMajor());
if ( curResult != 0 )
return curResult;
curResult = compareToWithNulls(getMinor(), o.getMinor());
if ( curResult != 0 )
return curResult;
curResult = compareToWithNulls(getBugfix(), o.getBugfix());
if ( curResult != 0 )
return curResult;
curResult = compareToWithNulls(getBuild(), o.getBuild());
if ( curResult != 0 )
return curResult;
}
return 0;
}
private void versionsAreValid( Version v ) throws InvalidVersionException {
if ( !isValid() )
throw new InvalidVersionException(this);
if ( !v.isValid() )
throw new InvalidVersionException(v);
}
/** Compares this version to a given version and returns true if this version is greater or equal than the given one
* Throws an InvalidVersionException if either this or the given version are invalid
*
* @param v Version to compare with
* @return
* @throws InvalidVersionException
*/
public boolean isGreaterOrEqualThan( Version v ) throws InvalidVersionException {
versionsAreValid(v);
return compareTo(v) >= 0;
}
public boolean isGreaterThan( Version v) throws InvalidVersionException
{
versionsAreValid(v);
return compareTo(v) > 0;
}
public boolean isLessOrEqualThan( Version v ) throws InvalidVersionException
{
versionsAreValid(v);
return compareTo(v) <= 0;
}
public boolean isLessThan( Version v) throws InvalidVersionException
{
versionsAreValid(v);
return compareTo(v) < 0;
}
}
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