QueryTag (Jakarta Standard Tag Library Implementation 3.0.1 API)

java.lang.Object
- jakarta.servlet.jsp.tagext.TagSupport
- - jakarta.servlet.jsp.tagext.BodyTagSupport
  - - org.apache.taglibs.standard.tag.common.sql.QueryTagSupport
    - - org.apache.taglibs.standard.tag.el.sql.QueryTag

All Implemented Interfaces:

jakarta.servlet.jsp.jstl.sql.SQLExecutionTag, jakarta.servlet.jsp.tagext.BodyTag, jakarta.servlet.jsp.tagext.IterationTag, jakarta.servlet.jsp.tagext.JspTag, jakarta.servlet.jsp.tagext.Tag, jakarta.servlet.jsp.tagext.TryCatchFinally, Serializable
```
public class QueryTag
extends QueryTagSupport
```
Subclass for the JSTL library with EL support.

Author:

Hans Bergsten, Justyna Horwat

See Also:

Serialized Form

Field Summary
- Fields inherited from class org.apache.taglibs.standard.tag.common.sql.QueryTagSupport
  dataSourceSpecified, maxRows, maxRowsSpecified, rawDataSource, sql, startRow
- 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, EVAL_BODY_TAG
- 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

QueryTag()
Constructs a new QueryTag.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`doStartTag()`	Prepares for execution by setting the initial state, such as getting the `Connection`
`void`	`setDataSource(String dataSourceEL)`
`void`	`setMaxRows(String maxRowsEL)`	Query result can be limited by specifying the maximum number of rows returned.
`void`	`setSql(String sqlEL)`	Setter method for the SQL statement to use for the query.
`void`	`setStartRow(String startRowEL)`	The index of the first row returned can be specified using startRow.

Methods inherited from class org.apache.taglibs.standard.tag.common.sql.QueryTagSupport
addSQLParameter, doCatch, doEndTag, doFinally, setScope, setVar

Methods inherited from class jakarta.servlet.jsp.tagext.BodyTagSupport
doAfterBody, doInitBody, getBodyContent, getPreviousOut, release, 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

- Constructor Detail
  - QueryTag
```
public QueryTag()
```
    Constructs a new QueryTag. As with TagSupport, subclasses should not provide other constructors and are expected to call the superclass constructor
- Method Detail
  - setDataSource
```
public void setDataSource(String dataSourceEL)
```
  - setStartRow
```
public void setStartRow(String startRowEL)
```
    The index of the first row returned can be specified using startRow.
  - setMaxRows
```
public void setMaxRows(String maxRowsEL)
```
    Query result can be limited by specifying the maximum number of rows returned.
  - setSql
```
public void setSql(String sqlEL)
```
    Setter method for the SQL statement to use for the query. The statement may contain parameter markers (question marks, ?). If so, the parameter values must be set using nested value elements.
  - doStartTag
```
public int doStartTag()
               throws jakarta.servlet.jsp.JspException
```
    Description copied from class: QueryTagSupport
    
    Prepares for execution by setting the initial state, such as getting the Connection
    
    Specified by:
    
    doStartTag in interface jakarta.servlet.jsp.tagext.Tag
    
    Overrides:
    
    doStartTag in class QueryTagSupport
    
    Throws:
    
    jakarta.servlet.jsp.JspException