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| <div class="subTitle">org.apache.taglibs.standard.lang.jstl</div> |
| <h2 title="Class Coercions" class="title">Class Coercions</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.taglibs.standard.lang.jstl.Coercions</li> |
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| <pre>public class <span class="typeNameLabel">Coercions</span> |
| extends java.lang.Object</pre> |
| <div class="block"><p>This class contains the logic for coercing data types before |
| operators are applied to them. |
| |
| <p>The following is the list of rules applied for various type |
| conversions. |
| |
| <ul><pre> |
| Applying arithmetic operator |
| Binary operator - A {+,-,*} B |
| if A and B are null |
| return 0 |
| if A or B is Float, Double, or String containing ".", "e", or "E" |
| coerce both A and B to Double |
| apply operator |
| otherwise |
| coerce both A and B to Long |
| apply operator |
| if operator results in exception (such as divide by 0), error |
| |
| Binary operator - A {/,div} B |
| if A and B are null |
| return 0 |
| otherwise |
| coerce both A and B to Double |
| apply operator |
| if operator results in exception (such as divide by 0), error |
| |
| Binary operator - A {%,mod} B |
| if A and B are null |
| return 0 |
| if A or B is Float, Double, or String containing ".", "e" or "E" |
| coerce both to Double |
| apply operator |
| otherwise |
| coerce both A and B to Long |
| apply operator |
| if operator results in exception (such as divide by 0), error |
| |
| Unary minus operator - -A |
| if A is null |
| return 0 |
| if A is String |
| if A contains ".", "e", or "E" |
| coerce to Double, apply operator |
| otherwise |
| coerce to a Long and apply operator |
| if A is Byte,Short,Integer,Long,Float,Double |
| retain type, apply operator |
| if operator results in exception, error |
| otherwise |
| error |
| |
| Applying "empty" operator - empty A |
| if A is null |
| return true |
| if A is zero-length String |
| return true |
| if A is zero-length array |
| return true |
| if A is List and ((List) A).isEmpty() |
| return true |
| if A is Map and ((Map) A).isEmpty() |
| return true |
| otherwise |
| return false |
| |
| Applying logical operators |
| Binary operator - A {and,or} B |
| coerce both A and B to Boolean, apply operator |
| NOTE - operator stops as soon as expression can be determined, i.e., |
| A and B and C and D - if B is false, then only A and B is evaluated |
| Unary not operator - not A |
| coerce A to Boolean, apply operator |
| |
| Applying relational operator |
| A {<,>,<=,>=,lt,gt,lte,gte} B |
| if A==B |
| if operator is >= or <= |
| return true |
| otherwise |
| return false |
| if A or B is null |
| return false |
| if A or B is Float or Double |
| coerce both A and B to Double |
| apply operator |
| if A or B is Byte,Short,Character,Integer,Long |
| coerce both A and B to Long |
| apply operator |
| if A or B is String |
| coerce both A and B to String, compare lexically |
| if A is Comparable |
| if A.compareTo (B) throws exception |
| error |
| otherwise |
| use result of A.compareTo(B) |
| if B is Comparable |
| if B.compareTo (A) throws exception |
| error |
| otherwise |
| use result of B.compareTo(A) |
| otherwise |
| error |
| |
| Applying equality operator |
| A {==,!=} B |
| if A==B |
| apply operator |
| if A or B is null |
| return false for ==, true for != |
| if A or B is Float or Double |
| coerce both A and B to Double |
| apply operator |
| if A or B is Byte,Short,Character,Integer,Long |
| coerce both A and B to Long |
| apply operator |
| if A or B is Boolean |
| coerce both A and B to Boolean |
| apply operator |
| if A or B is String |
| coerce both A and B to String, compare lexically |
| otherwise |
| if an error occurs while calling A.equals(B) |
| error |
| apply operator to result of A.equals(B) |
| |
| coercions |
| |
| coerce A to String |
| A is String |
| return A |
| A is null |
| return "" |
| A.toString throws exception |
| error |
| otherwise |
| return A.toString |
| |
| coerce A to primitive Number type N |
| A is null or "" |
| return 0 |
| A is Character |
| convert to short, apply following rules |
| A is Boolean |
| error |
| A is Number type N |
| return A |
| A is Number with less precision than N |
| coerce quietly |
| A is Number with greater precision than N |
| coerce quietly |
| A is String |
| new N.valueOf(A) throws exception |
| error |
| return N.valueOf(A) |
| otherwise |
| error |
| |
| coerce A to Character should be |
| A is null or "" |
| return (char) 0 |
| A is Character |
| return A |
| A is Boolean |
| error |
| A is Number with less precision than short |
| coerce quietly - return (char) A |
| A is Number with greater precision than short |
| coerce quietly - return (char) A |
| A is String |
| return A.charAt (0) |
| otherwise |
| error |
| |
| coerce A to Boolean |
| A is null or "" |
| return false |
| A is Boolean |
| return A |
| A is String |
| Boolean.valueOf(A) throws exception |
| error |
| return Boolean.valueOf(A) |
| otherwise |
| error |
| |
| coerce A to any other type T |
| A is null |
| return null |
| A is assignable to T |
| coerce quietly |
| A is String |
| T has no PropertyEditor |
| if A is "", return null |
| otherwise error |
| T's PropertyEditor throws exception |
| if A is "", return null |
| otherwise error |
| otherwise |
| apply T's PropertyEditor |
| otherwise |
| error |
| </pre></ul></div> |
| </li> |
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| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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| </a> |
| <h3>Constructor Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#Coercions--">Coercions</a></span>()</code> </td> |
| </tr> |
| </table> |
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| <!-- ========== METHOD SUMMARY =========== --> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>static java.lang.Object</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#applyArithmeticOperator-java.lang.Object-java.lang.Object-org.apache.taglibs.standard.lang.jstl.ArithmeticOperator-org.apache.taglibs.standard.lang.jstl.Logger-">applyArithmeticOperator</a></span>(java.lang.Object pLeft, |
| java.lang.Object pRight, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ArithmeticOperator.html" title="class in org.apache.taglibs.standard.lang.jstl">ArithmeticOperator</a> pOperator, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger)</code> |
| <div class="block">Performs all of the necessary type conversions, then calls on the |
| appropriate operator.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static java.lang.Object</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#applyEqualityOperator-java.lang.Object-java.lang.Object-org.apache.taglibs.standard.lang.jstl.EqualityOperator-org.apache.taglibs.standard.lang.jstl.Logger-">applyEqualityOperator</a></span>(java.lang.Object pLeft, |
| java.lang.Object pRight, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/EqualityOperator.html" title="class in org.apache.taglibs.standard.lang.jstl">EqualityOperator</a> pOperator, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger)</code> |
| <div class="block">Performs all of the necessary type conversions, then calls on the |
| appropriate operator.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static java.lang.Object</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#applyRelationalOperator-java.lang.Object-java.lang.Object-org.apache.taglibs.standard.lang.jstl.RelationalOperator-org.apache.taglibs.standard.lang.jstl.Logger-">applyRelationalOperator</a></span>(java.lang.Object pLeft, |
| java.lang.Object pRight, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/RelationalOperator.html" title="class in org.apache.taglibs.standard.lang.jstl">RelationalOperator</a> pOperator, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger)</code> |
| <div class="block">Performs all of the necessary type conversions, then calls on the |
| appropriate operator.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static java.lang.Object</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#coerce-java.lang.Object-java.lang.Class-org.apache.taglibs.standard.lang.jstl.Logger-">coerce</a></span>(java.lang.Object pValue, |
| java.lang.Class pClass, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger)</code> |
| <div class="block">Coerces the given value to the specified class.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static java.lang.Boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#coerceToBoolean-java.lang.Object-org.apache.taglibs.standard.lang.jstl.Logger-">coerceToBoolean</a></span>(java.lang.Object pValue, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger)</code> |
| <div class="block">Coerces a value to a Boolean</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static java.lang.Character</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#coerceToCharacter-java.lang.Object-org.apache.taglibs.standard.lang.jstl.Logger-">coerceToCharacter</a></span>(java.lang.Object pValue, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger)</code> |
| <div class="block">Coerces a value to a Character</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static java.lang.Integer</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#coerceToInteger-java.lang.Object-org.apache.taglibs.standard.lang.jstl.Logger-">coerceToInteger</a></span>(java.lang.Object pValue, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger)</code> |
| <div class="block">Coerces a value to an Integer, returning null if the coercion |
| isn't possible.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static java.lang.Object</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#coerceToObject-java.lang.Object-java.lang.Class-org.apache.taglibs.standard.lang.jstl.Logger-">coerceToObject</a></span>(java.lang.Object pValue, |
| java.lang.Class pClass, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger)</code> |
| <div class="block">Coerces a value to the specified Class that is not covered by any |
| of the above cases</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>static java.lang.Number</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#coerceToPrimitiveNumber-java.lang.Object-java.lang.Class-org.apache.taglibs.standard.lang.jstl.Logger-">coerceToPrimitiveNumber</a></span>(java.lang.Object pValue, |
| java.lang.Class pClass, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger)</code> |
| <div class="block">Coerces a value to the given primitive number class</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>static java.lang.String</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#coerceToString-java.lang.Object-org.apache.taglibs.standard.lang.jstl.Logger-">coerceToString</a></span>(java.lang.Object pValue, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger)</code> |
| <div class="block">Coerces the specified value to a String</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#isFloatingPointString-java.lang.Object-">isFloatingPointString</a></span>(java.lang.Object pObject)</code> |
| <div class="block">Returns true if the given string might contain a floating point |
| number - i.e., it contains ".", "e", or "E"</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#isFloatingPointType-java.lang.Class-">isFloatingPointType</a></span>(java.lang.Class pClass)</code> |
| <div class="block">Returns true if the given class is of a floating point type</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#isFloatingPointType-java.lang.Object-">isFloatingPointType</a></span>(java.lang.Object pObject)</code> |
| <div class="block">Returns true if the given Object is of a floating point type</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#isIntegerType-java.lang.Class-">isIntegerType</a></span>(java.lang.Class pClass)</code> |
| <div class="block">Returns true if the given class is of an integer type</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Coercions.html#isIntegerType-java.lang.Object-">isIntegerType</a></span>(java.lang.Object pObject)</code> |
| <div class="block">Returns true if the given Object is of an integer type</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="Coercions--"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>Coercions</h4> |
| <pre>public Coercions()</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
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| <h3>Method Detail</h3> |
| <a name="coerce-java.lang.Object-java.lang.Class-org.apache.taglibs.standard.lang.jstl.Logger-"> |
| <!-- --> |
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| <h4>coerce</h4> |
| <pre>public static java.lang.Object coerce(java.lang.Object pValue, |
| java.lang.Class pClass, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger) |
| throws <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></pre> |
| <div class="block">Coerces the given value to the specified class.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></code></dd> |
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| <pre>public static java.lang.String coerceToString(java.lang.Object pValue, |
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| throws <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></pre> |
| <div class="block">Coerces the specified value to a String</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></code></dd> |
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| <h4>coerceToPrimitiveNumber</h4> |
| <pre>public static java.lang.Number coerceToPrimitiveNumber(java.lang.Object pValue, |
| java.lang.Class pClass, |
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| throws <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></pre> |
| <div class="block">Coerces a value to the given primitive number class</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></code></dd> |
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| <h4>coerceToInteger</h4> |
| <pre>public static java.lang.Integer coerceToInteger(java.lang.Object pValue, |
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| throws <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></pre> |
| <div class="block">Coerces a value to an Integer, returning null if the coercion |
| isn't possible.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></code></dd> |
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| <h4>coerceToCharacter</h4> |
| <pre>public static java.lang.Character coerceToCharacter(java.lang.Object pValue, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger) |
| throws <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></pre> |
| <div class="block">Coerces a value to a Character</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></code></dd> |
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| <h4>coerceToBoolean</h4> |
| <pre>public static java.lang.Boolean coerceToBoolean(java.lang.Object pValue, |
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| throws <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></pre> |
| <div class="block">Coerces a value to a Boolean</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></code></dd> |
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| <h4>coerceToObject</h4> |
| <pre>public static java.lang.Object coerceToObject(java.lang.Object pValue, |
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| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger) |
| throws <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></pre> |
| <div class="block">Coerces a value to the specified Class that is not covered by any |
| of the above cases</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></code></dd> |
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| <h4>applyArithmeticOperator</h4> |
| <pre>public static java.lang.Object applyArithmeticOperator(java.lang.Object pLeft, |
| java.lang.Object pRight, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ArithmeticOperator.html" title="class in org.apache.taglibs.standard.lang.jstl">ArithmeticOperator</a> pOperator, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger) |
| throws <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></pre> |
| <div class="block">Performs all of the necessary type conversions, then calls on the |
| appropriate operator.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></code></dd> |
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| <pre>public static java.lang.Object applyRelationalOperator(java.lang.Object pLeft, |
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| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/RelationalOperator.html" title="class in org.apache.taglibs.standard.lang.jstl">RelationalOperator</a> pOperator, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger) |
| throws <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></pre> |
| <div class="block">Performs all of the necessary type conversions, then calls on the |
| appropriate operator.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></code></dd> |
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| <pre>public static java.lang.Object applyEqualityOperator(java.lang.Object pLeft, |
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| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/EqualityOperator.html" title="class in org.apache.taglibs.standard.lang.jstl">EqualityOperator</a> pOperator, |
| <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/Logger.html" title="class in org.apache.taglibs.standard.lang.jstl">Logger</a> pLogger) |
| throws <a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></pre> |
| <div class="block">Performs all of the necessary type conversions, then calls on the |
| appropriate operator.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/taglibs/standard/lang/jstl/ELException.html" title="class in org.apache.taglibs.standard.lang.jstl">ELException</a></code></dd> |
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| <h4>isFloatingPointType</h4> |
| <pre>public static boolean isFloatingPointType(java.lang.Object pObject)</pre> |
| <div class="block">Returns true if the given Object is of a floating point type</div> |
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| <h4>isFloatingPointType</h4> |
| <pre>public static boolean isFloatingPointType(java.lang.Class pClass)</pre> |
| <div class="block">Returns true if the given class is of a floating point type</div> |
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| <pre>public static boolean isFloatingPointString(java.lang.Object pObject)</pre> |
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| number - i.e., it contains ".", "e", or "E"</div> |
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