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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_07) on Sun May 06 17:59:58 GMT 2007 --><TITLE>Constraint (Heritrix 1.12.1)</TITLE><META NAME="keywords" CONTENT="org.archive.crawler.settings.Constraint class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="Constraint (Heritrix 1.12.1)";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/Constraint.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../org/archive/crawler/settings/ComplexType.MBeanAttributeInfoIterator.html" title="class in org.archive.crawler.settings"><B>PREV CLASS</B></A> <A HREF="../../../../org/archive/crawler/settings/Constraint.FailedCheck.html" title="class in org.archive.crawler.settings"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html?org/archive/crawler/settings/Constraint.html" target="_top"><B>FRAMES</B></A> <A HREF="Constraint.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: <A HREF="#nested_class_summary">NESTED</A> | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.archive.crawler.settings</FONT><BR>Class Constraint</H2><PRE>java.lang.Object <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.archive.crawler.settings.Constraint</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>java.io.Serializable, java.lang.Comparable<<A HREF="../../../../org/archive/crawler/settings/Constraint.html" title="class in org.archive.crawler.settings">Constraint</A>></DD></DL><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../org/archive/crawler/settings/LegalValueListConstraint.html" title="class in org.archive.crawler.settings">LegalValueListConstraint</A>, <A HREF="../../../../org/archive/crawler/settings/LegalValueTypeConstraint.html" title="class in org.archive.crawler.settings">LegalValueTypeConstraint</A>, <A HREF="../../../../org/archive/crawler/settings/RegularExpressionConstraint.html" title="class in org.archive.crawler.settings">RegularExpressionConstraint</A></DD></DL><HR><DL><DT><PRE>public abstract class <B>Constraint</B><DT>extends java.lang.Object<DT>implements java.lang.Comparable<<A HREF="../../../../org/archive/crawler/settings/Constraint.html" title="class in org.archive.crawler.settings">Constraint</A>>, java.io.Serializable</DL></PRE><P>Superclass for constraints that can be set on attribute definitions. <p> Constraints will be checked against attribute values. If a constraint check fails, an object of type FailedCheck is returned containing information that can be used to build meaningful information to the user. <p> A constraint has one of three levels: <ul> <li><CODE>Level.SEVERE</CODE>The attribute could not be set whatsoever. <li><CODE>Level.WARNING</CODE>The attribute is illegal i CrawlJobs, but could be set in profiles. Mostly used as holder value for settings that should be changed for every entity running a crawl. <li><CODE>Level.INFO</CODE>The attribute has a legal value, but is outside the bounds of what are considered a reasonable value. The user could be warned that she should investigate if the value actally is what she wants it be. </ul><P><P><DL><DT><B>Author:</B></DT> <DD>John Erik Halse</DD><DT><B>See Also:</B><DD><A HREF="../../../../serialized-form.html#org.archive.crawler.settings.Constraint">Serialized Form</A></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><A NAME="nested_class_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Nested Class Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> class</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/archive/crawler/settings/Constraint.FailedCheck.html" title="class in org.archive.crawler.settings">Constraint.FailedCheck</A></B></CODE><BR> Objects of this class represents failed constraint checks.</TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../org/archive/crawler/settings/Constraint.html#Constraint(java.util.logging.Level, java.lang.String)">Constraint</A></B>(java.util.logging.Level level, java.lang.String msg)</CODE><BR> Constructs a new Constraint.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../org/archive/crawler/settings/Constraint.FailedCheck.html" title="class in org.archive.crawler.settings">Constraint.FailedCheck</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/archive/crawler/settings/Constraint.html#check(org.archive.crawler.settings.CrawlerSettings, org.archive.crawler.settings.ComplexType, org.archive.crawler.settings.Type, java.lang.Object)">check</A></B>(<A HREF="../../../../org/archive/crawler/settings/CrawlerSettings.html" title="class in org.archive.crawler.settings">CrawlerSettings</A> settings, <A HREF="../../../../org/archive/crawler/settings/ComplexType.html" title="class in org.archive.crawler.settings">ComplexType</A> owner, <A HREF="../../../../org/archive/crawler/settings/Type.html" title="class in org.archive.crawler.settings">Type</A> definition, java.lang.Object value)</CODE><BR> Run the check.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/archive/crawler/settings/Constraint.html#compareTo(org.archive.crawler.settings.Constraint)">compareTo</A></B>(<A HREF="../../../../org/archive/crawler/settings/Constraint.html" title="class in org.archive.crawler.settings">Constraint</A> o)</CODE><BR> Compare this constraints level to another constraint.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/archive/crawler/settings/Constraint.html#getDefaultMessage()">getDefaultMessage</A></B>()</CODE>?? 快捷鍵說明
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