Package net.ontopia.topicmaps.nav2.taglibs.tolog

Class IfTag

java.lang.Object
jakarta.servlet.jsp.tagext.TagSupport
jakarta.servlet.jsp.tagext.BodyTagSupport
net.ontopia.topicmaps.nav2.taglibs.tolog.QueryExecutingTag
net.ontopia.topicmaps.nav2.taglibs.tolog.IfTag
All Implemented Interfaces:
jakarta.servlet.jsp.tagext.BodyTag, jakarta.servlet.jsp.tagext.IterationTag, jakarta.servlet.jsp.tagext.JspTag, jakarta.servlet.jsp.tagext.Tag, Serializable
Direct Known Subclasses:
WhenTag
public class IfTag extends QueryExecutingTag
INTERNAL: Tolog Tag for testing if a variable is bound and non-null or if a query gives a non-empty result. If the variable is bound and non-null, then the body is evaluated once. If the query-result is non-empty, binds the query variables to the first row and evaluates the body once.
See Also:

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    protected String
    var
     

    Fields inherited from class net.ontopia.topicmaps.nav2.taglibs.tolog.QueryExecutingTag

    columnNames, contextManager, query, queryResult

    Fields inherited from class jakarta.servlet.jsp.tagext.BodyTagSupport

    bodyContent

    Fields inherited from class jakarta.servlet.jsp.tagext.TagSupport

    id, pageContext

    Fields inherited from interface jakarta.servlet.jsp.tagext.BodyTag

    EVAL_BODY_BUFFERED

    Fields inherited from interface jakarta.servlet.jsp.tagext.IterationTag

    EVAL_BODY_AGAIN

    Fields inherited from interface jakarta.servlet.jsp.tagext.Tag

    EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

  • Constructor Summary

    Constructors
    Constructor
    Description
    IfTag()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    doEndTag()
    Process the end tag.
    int
    doStartTag()
    Process the start tag for this instance.
    void
    release()
    Resets the state of the Tag.
    void
    setVar(String var)
     

    Methods inherited from class net.ontopia.topicmaps.nav2.taglibs.tolog.QueryExecutingTag

    bindVariables, doAfterBody, getQuery, getQueryResult, setQuery

    Methods inherited from class jakarta.servlet.jsp.tagext.BodyTagSupport

    doInitBody, getBodyContent, getPreviousOut, setBodyContent

    Methods inherited from class jakarta.servlet.jsp.tagext.TagSupport

    findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    Methods inherited from interface jakarta.servlet.jsp.tagext.Tag

    getParent, setPageContext, setParent

  • Field Details

  • Constructor Details

    • IfTag

      public IfTag()

  • Method Details

    • doStartTag

      public int doStartTag() throws jakarta.servlet.jsp.JspTagException
      Process the start tag for this instance.
      Specified by:
      doStartTag in interface jakarta.servlet.jsp.tagext.Tag
      Overrides:
      doStartTag in class QueryExecutingTag
      Throws:
      jakarta.servlet.jsp.JspTagException

    • doEndTag

      public int doEndTag() throws jakarta.servlet.jsp.JspException
      Process the end tag.
      Specified by:
      doEndTag in interface jakarta.servlet.jsp.tagext.Tag
      Overrides:
      doEndTag in class QueryExecutingTag
      Throws:
      jakarta.servlet.jsp.JspException

    • release

      public void release()
      Resets the state of the Tag.
      Specified by:
      release in interface jakarta.servlet.jsp.tagext.Tag
      Overrides:
      release in class QueryExecutingTag

    • setVar

      public void setVar(String var)