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minor typos and tweaks to 'expressions' chapter

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Mark Fisher 2009-08-28 12:44:54 +00:00
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spring-framework-reference/src/expressions.xml
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@ -20,14 +20,14 @@
portfolio. Its language features are driven by the requirements of the portfolio. Its language features are driven by the requirements of the
projects in the Spring portfolio, including tooling requirements for code projects in the Spring portfolio, including tooling requirements for code
completion support within the eclipse based SpringSource Tool Suite. That completion support within the eclipse based SpringSource Tool Suite. That
said, SpEL is based on an technology agnostic API allowing other said, SpEL is based on a technology agnostic API allowing other
expression language implementations to be integrated should the need expression language implementations to be integrated should the need
arise.</para> arise.</para>
<para>While SpEL serves as the foundation for expression evaluation within <para>While SpEL serves as the foundation for expression evaluation within
the Spring portfolio, it is not directly tied to Spring and can be used the Spring portfolio, it is not directly tied to Spring and can be used
independently. In order to be self contained, many of the examples in this independently. In order to be self contained, many of the examples in this
chapter use SpEL as if it was an independent expression language. This chapter use SpEL as if it were an independent expression language. This
requires creating a few bootstrapping infrastructure classes such as the requires creating a few bootstrapping infrastructure classes such as the
parser. Most Spring users will not need to deal with this infrastructure parser. Most Spring users will not need to deal with this infrastructure
and will instead only author expression strings for evaluation. An example and will instead only author expression strings for evaluation. An example
@ -117,10 +117,10 @@
<para>This section introduces the simple use of SpEL interfaces and its <para>This section introduces the simple use of SpEL interfaces and its
expression language. The complete language reference can be found in the expression language. The complete language reference can be found in the
section <link lang="" linkend="expressions-language-ref">Language section <link lang="" linkend="expressions-language-ref">Language
Reference</link></para> Reference</link>.</para>
<para>The following code introduces the SpEL API to evaluate the literal <para>The following code introduces the SpEL API to evaluate the literal
string expression 'Hello World'</para> string expression 'Hello World'.</para>
<para><programlisting language="java">ExpressionParser parser = new SpelExpressionParser(); <para><programlisting language="java">ExpressionParser parser = new SpelExpressionParser();
Expression exp = parser.parseExpression("<emphasis role="bold">'Hello World'</emphasis>"); Expression exp = parser.parseExpression("<emphasis role="bold">'Hello World'</emphasis>");
@ -129,7 +129,7 @@ String message = (String) exp.getValue();</programlisting>The value of the
<para>The SpEL classes and interfaces you are most likely to use are <para>The SpEL classes and interfaces you are most likely to use are
located in the packages <package>org.springframework.expression</package> located in the packages <package>org.springframework.expression</package>
and its sub package and <package>spel.support</package>.</para> and its sub packages and <package>spel.support</package>.</para>
<para>The interface <interfacename>ExpressionParser</interfacename> is <para>The interface <interfacename>ExpressionParser</interfacename> is
responsible for parsing an expression string. In this example the responsible for parsing an expression string. In this example the
@ -140,22 +140,22 @@ String message = (String) exp.getValue();</programlisting>The value of the
<classname>ParseException</classname> and <classname>ParseException</classname> and
<classname>EvaluationException</classname> when calling <classname>EvaluationException</classname> when calling
'<literal>parser.parseExpression</literal>' and '<literal>parser.parseExpression</literal>' and
'<literal>exp.getValue</literal>' respectfully.</para> '<literal>exp.getValue</literal>' respectively.</para>
<para>SpEL supports a wide range of features, such as calling methods, <para>SpEL supports a wide range of features, such as calling methods,
accessing properties and calling constructors.</para> accessing properties, and calling constructors.</para>
<para>As an example of method invocation, we call the 'concat' method on <para>As an example of method invocation, we call the 'concat' method on
the string literal</para> the string literal.</para>
<programlisting lang="" language="java">ExpressionParser parser = new SpelExpressionParser(); <programlisting language="java">ExpressionParser parser = new SpelExpressionParser();
Expression exp = parser.parseExpression("<emphasis role="bold">'Hello World'.concat('!')</emphasis>"); Expression exp = parser.parseExpression("<emphasis role="bold">'Hello World'.concat('!')</emphasis>");
String message = (String) exp.getValue();</programlisting> String message = (String) exp.getValue();</programlisting>
<para>The value of message is now 'Hello World!'.</para> <para>The value of message is now 'Hello World!'.</para>
<para>As an example of calling a JavaBean property, the String property <para>As an example of calling a JavaBean property, the String property
'Bytes' can be called as shown below</para> 'Bytes' can be called as shown below.</para>
<programlisting language="java">ExpressionParser parser = new SpelExpressionParser(); <programlisting language="java">ExpressionParser parser = new SpelExpressionParser();
@ -167,7 +167,7 @@ byte[] bytes = (byte[]) exp.getValue();</programlisting>
<para>SpEL also supports nested properties using standard 'dot' notation, <para>SpEL also supports nested properties using standard 'dot' notation,
i.e. prop1.prop2.prop3 and the setting of property values</para> i.e. prop1.prop2.prop3 and the setting of property values</para>
<para>Public fields may also be accessed</para> <para>Public fields may also be accessed.</para>
<programlisting language="java">ExpressionParser parser = new SpelExpressionParser(); <programlisting language="java">ExpressionParser parser = new SpelExpressionParser();
@ -177,7 +177,7 @@ Expression exp = parser.parseExpression("<emphasis role="bold">'Hello World'.byt
int length = (Integer) exp.getValue();</programlisting> int length = (Integer) exp.getValue();</programlisting>
<para>The String's constructor can be called instead of using a string <para>The String's constructor can be called instead of using a string
literal</para> literal.</para>
<programlisting language="java">ExpressionParser parser = new SpelExpressionParser(); <programlisting language="java">ExpressionParser parser = new SpelExpressionParser();
Expression exp = parser.parseExpression("<emphasis role="bold">new String('hello world').toUpperCase()</emphasis>"); Expression exp = parser.parseExpression("<emphasis role="bold">new String('hello world').toUpperCase()</emphasis>");
@ -187,19 +187,19 @@ String message = exp.getValue(String.class);</programlisting>
getValue(Class&lt;T&gt; desiredResultType)</literal>. Using this method getValue(Class&lt;T&gt; desiredResultType)</literal>. Using this method
removes the need to cast the value of the expression to the desired result removes the need to cast the value of the expression to the desired result
type. An <classname>EvaluationException</classname> will be thrown if the type. An <classname>EvaluationException</classname> will be thrown if the
value an not be cast to the type <literal>T</literal> or converted using value cannot be cast to the type <literal>T</literal> or converted using
the registered type converter.</para> the registered type converter.</para>
<para>The more common usage of SpEL is provide an expression string that <para>The more common usage of SpEL is to provide an expression string that
is evaluated against a specific object instance. In the following example is evaluated against a specific object instance. In the following example
we retrieve the <literal>Name</literal> property from an instance of the we retrieve the <literal>name</literal> property from an instance of the
Inventor class.</para> Inventor class.</para>
<para><programlisting language="java">// Create and set a calendar <para><programlisting language="java">// Create and set a calendar
GregorianCalendar c = new GregorianCalendar(); GregorianCalendar c = new GregorianCalendar();
c.set(1856, 7, 9); c.set(1856, 7, 9);
// The constructor arguments are name, birthday, and nationaltiy. // The constructor arguments are name, birthday, and nationality.
Inventor tesla = new Inventor("Nikola Tesla", c.getTime(), "Serbian"); Inventor tesla = new Inventor("Nikola Tesla", c.getTime(), "Serbian");
ExpressionParser parser = new SpelExpressionParser(); ExpressionParser parser = new SpelExpressionParser();
@ -211,19 +211,21 @@ context.setRootObject(tesla);
String name = (String) exp.getValue(context);</programlisting>In the last String name = (String) exp.getValue(context);</programlisting>In the last
line, the value of the string variable 'name' will be set to "Nikola line, the value of the string variable 'name' will be set to "Nikola
Tesla". The class StandardEvaluationContext is where you can specify which Tesla". The class StandardEvaluationContext is where you can specify which
object the "Name" property will be evaluated against. You can reuse the object the "name" property will be evaluated against. You can reuse the
same expression over and over again and set a new root object on the same expression over and over again and set a new root object on the
evaluation context. Expressions are evaluated using reflection.</para> evaluation context. Expressions are evaluated using reflection.</para>
<para><note> <para>
<note>
<para>In standalone usage of SpEL you will need to create the parser <para>In standalone usage of SpEL you will need to create the parser
as well as provide an evaluation context. However, more common usage as well as provide an evaluation context. However, more common usage
is to provide only the SpEL expression string as part of a is to provide only the SpEL expression string as part of a
configuration file, for example for Spring bean or Spring Web Flow configuration file, for example for Spring bean or Spring Web Flow
definitions. In this case, the parser, evaluation context, root object definitions. In this case, the parser, evaluation context, root object
and any predefined variables will be set up for you implicitly.</para> and any predefined variables will be set up for you implicitly.</para>
</note>As a final introductory example, the use of a boolean operator is </note>
shown using the Inventor object in the previous example</para> As a final introductory example, the use of a boolean operator is
shown using the Inventor object in the previous example.</para>
<programlisting language="java">Expression exp = parser.parseExpression("name == 'Nikola Tesla'"); <programlisting language="java">Expression exp = parser.parseExpression("name == 'Nikola Tesla'");
boolean result = exp.getValue(context, Boolean.class); // evaluates to true</programlisting> boolean result = exp.getValue(context, Boolean.class); // evaluates to true</programlisting>
@ -236,14 +238,14 @@ boolean result = exp.getValue(context, Boolean.class); // evaluates to true</pr
fields, and to help perform type conversion. The out-of-the-box fields, and to help perform type conversion. The out-of-the-box
implementation, <classname>StandardEvaluationContext</classname>, uses implementation, <classname>StandardEvaluationContext</classname>, uses
reflection to manipulate the object, caching reflection to manipulate the object, caching
j<package>ava.lang.reflect</package>'s <classname>Method</classname>, <package>java.lang.reflect</package>'s <classname>Method</classname>,
<classname>Field</classname>, and <classname>Constructor</classname> <classname>Field</classname>, and <classname>Constructor</classname>
instances for increased performance.</para> instances for increased performance.</para>
<para>The <classname>StandardEvaluationContext</classname> is where you <para>The <classname>StandardEvaluationContext</classname> is where you
specify the root object to evaluate against via the method specify the root object to evaluate against via the method
<methodname>setRootObject</methodname> or passing the root object into <methodname>setRootObject</methodname> or passing the root object into
the constructor. . You can also specify variables and functions that the constructor. You can also specify variables and functions that
will be used in the expression using the methods will be used in the expression using the methods
<methodname>setVariable</methodname> and <methodname>setVariable</methodname> and
<methodname>registerFunction</methodname>. The use of variables and <methodname>registerFunction</methodname>. The use of variables and
@ -278,7 +280,7 @@ boolean result = exp.getValue(context, Boolean.class); // evaluates to true</pr
<literal>Boolean</literal> before being placed in it. A simple <literal>Boolean</literal> before being placed in it. A simple
example:</para> example:</para>
<programlisting>class Simple { <programlisting language="java">class Simple {
public List&lt;Boolean&gt; booleanList = new ArrayList&lt;Boolean&gt;(); public List&lt;Boolean&gt; booleanList = new ArrayList&lt;Boolean&gt;();
} }
@ -330,7 +332,7 @@ Boolean b = simple.booleanList.get(0);
&lt;/bean&gt;</programlisting> &lt;/bean&gt;</programlisting>
<para>You can also refer to other bean properties by name, for <para>You can also refer to other bean properties by name, for
example</para> example.</para>
<para><programlisting language="xml">&lt;bean id="numberGuess" class="org.spring.samples.NumberGuess"&gt; <para><programlisting language="xml">&lt;bean id="numberGuess" class="org.spring.samples.NumberGuess"&gt;
&lt;property name="randomNumber" value="#{ T(java.lang.Math).random() * 100.0 }"/&gt; &lt;property name="randomNumber" value="#{ T(java.lang.Math).random() * 100.0 }"/&gt;
@ -354,7 +356,7 @@ Boolean b = simple.booleanList.get(0);
value.</para> value.</para>
<para>Here is an example to set the default value of a field <para>Here is an example to set the default value of a field
variable</para> variable.</para>
<programlisting language="java">public static class FieldValueTestBean <programlisting language="java">public static class FieldValueTestBean
@ -376,7 +378,7 @@ Boolean b = simple.booleanList.get(0);
</programlisting> </programlisting>
<para>The equivalent but on a property setter method is shown <para>The equivalent but on a property setter method is shown
below</para> below.</para>
<programlisting language="java">public static class PropertyValueTestBean <programlisting language="java">public static class PropertyValueTestBean
@ -438,7 +440,7 @@ Boolean b = simple.booleanList.get(0);
<title>Literal expressions</title> <title>Literal expressions</title>
<para>The types of literal expressions supported are strings, dates, <para>The types of literal expressions supported are strings, dates,
numeric values (int, real, and hex), boolean and null. String are numeric values (int, real, and hex), boolean and null. Strings are
delimited by single quotes. To put a single quote itself in a string use delimited by single quotes. To put a single quote itself in a string use
the backslash character. The following listing shows simple usage of the backslash character. The following listing shows simple usage of
literals. Typically they would not be used in isolation like this, but literals. Typically they would not be used in isolation like this, but
@ -473,7 +475,7 @@ Object nullValue = parser.parseExpression("null").getValue();
and tesla, were populated with data listed in the section <link and tesla, were populated with data listed in the section <link
linkend="expressions-example-classes">Classes used in the linkend="expressions-example-classes">Classes used in the
examples</link>. To navigate "down" and get Tesla's year of birth and examples</link>. To navigate "down" and get Tesla's year of birth and
Pupin's city of birth the following expressions are used</para> Pupin's city of birth the following expressions are used.</para>
<programlisting lang="" language="java">// evals to 1856 <programlisting lang="" language="java">// evals to 1856
int year = (Integer) parser.parseExpression("Birthdate.Year + 1900").getValue(context); int year = (Integer) parser.parseExpression("Birthdate.Year + 1900").getValue(context);
@ -509,9 +511,9 @@ String invention = parser.parseExpression("Members[0].Inventions[6]").getValue(s
<para>The contents of maps are obtained by specifying the literal key <para>The contents of maps are obtained by specifying the literal key
value within the brackets. In this case, because keys for the Officers value within the brackets. In this case, because keys for the Officers
map are strings, we can specify string literal.</para> map are strings, we can specify string literals.</para>
<programlisting lang="" language="java">// Officer's Dictionary <programlisting language="java">// Officer's Dictionary
Inventor pupin = parser.parseExpression("Officers['president']").getValue(societyContext, Inventor pupin = parser.parseExpression("Officers['president']").getValue(societyContext,
Inventor.class); Inventor.class);
@ -559,8 +561,8 @@ boolean trueValue = parser.parseExpression("2 == 2").getValue(Boolean.class);
boolean falseValue = parser.parseExpression("2 &lt; -5.0").getValue(Boolean.class); boolean falseValue = parser.parseExpression("2 &lt; -5.0").getValue(Boolean.class);
// evaluates to true // evaluates to true
boolean trueValue = parser.parseExpression("'black' &lt; 'block'").getValue(Boolean.class);</programlisting>In boolean trueValue = parser.parseExpression("'black' &lt; 'block'").getValue(Boolean.class);</programlisting>
addition to standard relational operators SpEL supports the In addition to standard relational operators SpEL supports the
'instanceof' and regular expression based 'matches' operator.</para> 'instanceof' and regular expression based 'matches' operator.</para>
<programlisting language="java">// evaluates to false <programlisting language="java">// evaluates to false
@ -581,7 +583,7 @@ boolean falseValue =
<title>Logical operators</title> <title>Logical operators</title>
<para>The logical operators that are supported are and, or, and not. <para>The logical operators that are supported are and, or, and not.
Their use is demonstrated below</para> Their use is demonstrated below.</para>
<para><programlisting language="java">// -- AND -- <para><programlisting language="java">// -- AND --
@ -619,7 +621,7 @@ boolean falseValue = parser.parseExpression(expression).getValue(societyContext,
Subtraction can be used on numbers and dates. Multiplication and Subtraction can be used on numbers and dates. Multiplication and
division can be used only on numbers. Other mathematical operators division can be used only on numbers. Other mathematical operators
supported are modulus (%) and exponential power (^). Standard operator supported are modulus (%) and exponential power (^). Standard operator
precedence is enforced. These operators are demonstrated below</para> precedence is enforced. These operators are demonstrated below.</para>
<para><programlisting language="java">// Addition <para><programlisting language="java">// Addition
int two = parser.parseExpression("1 + 1").getValue(Integer.class); // 2 int two = parser.parseExpression("1 + 1").getValue(Integer.class); // 2
@ -659,7 +661,7 @@ int minusTwentyOne = parser.parseExpression("1+2-3*8").getValue(Integer.class);
<para>Setting of a property is done by using the assignment operator. <para>Setting of a property is done by using the assignment operator.
This would typically be done within a call to This would typically be done within a call to
<literal>setValue</literal> but can also be done inside a call to <literal>setValue</literal> but can also be done inside a call to
<literal>getValue</literal></para> <literal>getValue</literal>.</para>
<programlisting language="java">Inventor inventor = new Inventor(); <programlisting language="java">Inventor inventor = new Inventor();
StandardEvaluationContext inventorContext = new StandardEvaluationContext(inventor); StandardEvaluationContext inventorContext = new StandardEvaluationContext(inventor);
@ -781,7 +783,7 @@ List&lt;Integer&gt; primesGreaterThanTen =
<para>You can extend SpEL by registering user defined functions that can <para>You can extend SpEL by registering user defined functions that can
be called within the expression string. The function is registered with be called within the expression string. The function is registered with
the <classname>StandardEvaluationContext</classname> using the the <classname>StandardEvaluationContext</classname> using the
method</para> method.</para>
<programlisting language="java">public void registerFunction(String name, Method m)</programlisting> <programlisting language="java">public void registerFunction(String name, Method m)</programlisting>
@ -801,7 +803,7 @@ List&lt;Integer&gt; primesGreaterThanTen =
}</programlisting> }</programlisting>
<para>This method is then registered with the evaluation context and can <para>This method is then registered with the evaluation context and can
be used within an expression string</para> be used within an expression string.</para>
<programlisting language="java">ExpressionParser parser = new SpelExpressionParser(); <programlisting language="java">ExpressionParser parser = new SpelExpressionParser();
StandardEvaluationContext context = new StandardEvaluationContext(); StandardEvaluationContext context = new StandardEvaluationContext();
@ -818,13 +820,13 @@ String helloWorldReversed =
<title>Ternary Operator (If-Then-Else)</title> <title>Ternary Operator (If-Then-Else)</title>
<para>You can use the ternary operator for performing if-then-else <para>You can use the ternary operator for performing if-then-else
conditional logic inside the expression. A minimal example is;</para> conditional logic inside the expression. A minimal example is:</para>
<programlisting language="java">String falseString = <programlisting language="java">String falseString =
parser.parseExpression("false ? 'trueExp' : 'falseExp'").getValue(String.class);</programlisting> parser.parseExpression("false ? 'trueExp' : 'falseExp'").getValue(String.class);</programlisting>
<para>In this case, the boolean false results in returning the string <para>In this case, the boolean false results in returning the string
value 'falseExp'. A less artificial example is shown below.</para> value 'falseExp'. A more realistic example is shown below.</para>
<programlisting language="java">parser.parseExpression("Name").setValue(societyContext, "IEEE"); <programlisting language="java">parser.parseExpression("Name").setValue(societyContext, "IEEE");
societyContext.setVariable("queryName", "Nikola Tesla"); societyContext.setVariable("queryName", "Nikola Tesla");
@ -837,7 +839,7 @@ String queryResultString =
// queryResultString = "Nikola Tesla is a member of the IEEE Society"</programlisting> // queryResultString = "Nikola Tesla is a member of the IEEE Society"</programlisting>
<para>Also see the next section on the Elvis operator for an even <para>Also see the next section on the Elvis operator for an even
shorter syntax for the ternary operator</para> shorter syntax for the ternary operator.</para>
</section> </section>
<section> <section>
@ -846,16 +848,16 @@ String queryResultString =
<para>The Elvis operator is a shortening of the ternary operator syntax <para>The Elvis operator is a shortening of the ternary operator syntax
and is used in the <ulink and is used in the <ulink
url="http://groovy.codehaus.org/Operators#Operators-ElvisOperator(%3F%3A)">Groovy</ulink> url="http://groovy.codehaus.org/Operators#Operators-ElvisOperator(%3F%3A)">Groovy</ulink>
language. The ternary operator syntax you usually have to repeat a language. With the ternary operator syntax you usually have to repeat a
variable twice, for example</para> variable twice, for example:</para>
<programlisting>String name = "Elvis Presley"; <programlisting>String name = "Elvis Presley";
String displayName = name != null ? name : "Unknown";</programlisting> String displayName = name != null ? name : "Unknown";</programlisting>
<para>Instead you can use the Elvis operator, named for the resemblance <para>Instead you can use the Elvis operator, named for the resemblance
to Elvis' hair style. </para> to Elvis' hair style.</para>
<programlisting>ExpressionParser parser = new SpelExpressionParser(); <programlisting language="java">ExpressionParser parser = new SpelExpressionParser();
String name = parser.parseExpression("null?:'Unknown'").getValue(String.class); String name = parser.parseExpression("null?:'Unknown'").getValue(String.class);
@ -863,9 +865,9 @@ System.out.println(name); // 'Unknown'
</programlisting> </programlisting>
<para>Here is a more complex example </para> <para>Here is a more complex example.</para>
<programlisting>ExpressionParser parser = new SpelExpressionParser(); <programlisting language="java">ExpressionParser parser = new SpelExpressionParser();
Inventor tesla = new Inventor("Nikola Tesla", "Serbian"); Inventor tesla = new Inventor("Nikola Tesla", "Serbian");
StandardEvaluationContext context = new StandardEvaluationContext(tesla); StandardEvaluationContext context = new StandardEvaluationContext(tesla);
@ -892,7 +894,7 @@ System.out.println(name); // Elvis Presley</programlisting>
properties of the object. To avoid this, the safe navigation operator properties of the object. To avoid this, the safe navigation operator
will simply return null instead of throwing an exception.</para> will simply return null instead of throwing an exception.</para>
<programlisting>ExpressionParser parser = new SpelExpressionParser(); <programlisting language="java">ExpressionParser parser = new SpelExpressionParser();
Inventor tesla = new Inventor("Nikola Tesla", "Serbian"); Inventor tesla = new Inventor("Nikola Tesla", "Serbian");
tesla.setPlaceOfBirth(new PlaceOfBirth("Smiljan")); tesla.setPlaceOfBirth(new PlaceOfBirth("Smiljan"));
@ -912,7 +914,7 @@ System.out.println(city); // null - does not throw NullPointerException!!!</prog
<section> <section>
<title>Collection Selection</title> <title>Collection Selection</title>
<para>Selection is a powerful expression language feature that allow you <para>Selection is a powerful expression language feature that allows you
to transform some source collection into another by selecting from its to transform some source collection into another by selecting from its
entries.</para> entries.</para>
@ -969,7 +971,7 @@ List placesOfBirth = (List)parser.parseExpression("Members.![placeOfBirth.city]"
<title>Expression templating</title> <title>Expression templating</title>
<para>Expression templates allow a mixing of literal text with one or <para>Expression templates allow a mixing of literal text with one or
more evaluation blocks. Each evaluation block is delimited with a prefix more evaluation blocks. Each evaluation block is delimited with prefix
and suffix characters that you can define, a common choice is to use and suffix characters that you can define, a common choice is to use
<literal>${} </literal>as the delimiters. For example,</para> <literal>${} </literal>as the delimiters. For example,</para>
@ -980,14 +982,14 @@ List placesOfBirth = (List)parser.parseExpression("Members.![placeOfBirth.city]"
// evaluates to "random number is 0.7038186818312008"</programlisting> // evaluates to "random number is 0.7038186818312008"</programlisting>
<para>The string is evaluated by concatenating the literal text 'random <para>The string is evaluated by concatenating the literal text 'random
number is' with the result of evaluating the expression inside the ${} number is ' with the result of evaluating the expression inside the ${}
delimiter, in this case the result of calling that random() method. The delimiter, in this case the result of calling that random() method. The
second argument to the method <literal>parseExpression()</literal> of second argument to the method <literal>parseExpression()</literal> is of
the type <interfacename>ParserContext</interfacename>. The the type <interfacename>ParserContext</interfacename>. The
<interfacename>ParserContext</interfacename> interface is used to <interfacename>ParserContext</interfacename> interface is used to
influence how the expression is parsed in order to support the influence how the expression is parsed in order to support the
expression templating functionality. The definition of expression templating functionality. The definition of
<classname>TemplatedParserContext</classname> is shown below</para> <classname>TemplatedParserContext</classname> is shown below.</para>
<programlisting language="java">public class TemplatedParserContext implements ParserContext { <programlisting language="java">public class TemplatedParserContext implements ParserContext {
@ -1113,7 +1115,7 @@ public class PlaceOfBirth {
<para>Society.java</para> <para>Society.java</para>
<programlisting lang="">package org.spring.samples.spel.inventor; <programlisting language="java">package org.spring.samples.spel.inventor;
import java.util.*; import java.util.*;