Examples of org.apache.commons.jxpath.ClassFunctions

org.apache.commons.jxpath.ClassFunctions
Extension functions provided by a Java class. Let's say, we declared a ClassFunction like this:
```
 new ClassFunctions(Integer.class, "int") 
```
We can now use XPaths like:

"int:new(3)"

Equivalent to new Integer(3)

"int:getInteger('foo')"

Equivalent to Integer.getInteger("foo")

"int:floatValue(int:new(4))"

Equivalent to new Integer(4).floatValue()

If the first argument of a method is ExpressionContext, the expression context in which the function is evaluated is passed to the method. @author Dmitri Plotnikov @version $Revision: 1.7 $ $Date: 2003/03/11 00:59:11 $

            String clazzName = children[i].getAttribute("name", null);
            String prefix = children[i].getAttribute("prefix", null);
            if (clazzName != null && prefix != null) {
                try {
                    Class clazz = Class.forName(clazzName);
                    lib.addFunctions(new ClassFunctions(clazz, prefix));
                } catch (ClassNotFoundException cnf) {
                    // ignore
                }
            }
        }

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            String clazzName = children[i].getAttribute("name", null);
            String prefix = children[i].getAttribute("prefix", null);
            if (clazzName != null && prefix != null) {
                try {
                    Class clazz = Class.forName(clazzName);
                    lib.addFunctions(new ClassFunctions(clazz, prefix));
                } catch (ClassNotFoundException cnf) {
                    // ignore
                }
            }
        }

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            context = JXPathContext.newContext(new TestBean());
            Variables vars = context.getVariables();
            vars.declareVariable("test", new TestFunctions(4, "test"));


            FunctionLibrary lib = new FunctionLibrary();
            lib.addFunctions(new ClassFunctions(TestFunctions.class, "test"));
            lib.addFunctions(new ClassFunctions(TestFunctions2.class, "test"));
            lib.addFunctions(new PackageFunctions("", "call"));
            lib.addFunctions(
                new PackageFunctions(
                    "org.apache.commons.jxpath.ri.compiler.",
                    "jxpathtest"));
            context.setFunctions(lib);
        }
        functions = new ClassFunctions(TestFunctions.class, "test");
    }

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            String clazzName = children[i].getAttribute("name", null);
            String prefix = children[i].getAttribute("prefix", null);
            if (clazzName != null && prefix != null) {
                try {
                    Class clazz = Class.forName(clazzName);
                    this.library.addFunctions(new ClassFunctions(clazz, prefix));
                } catch (ClassNotFoundException cnf) {
                    // ignore
                }
            }
        }

View Full Code Here

            String clazzName = children[i].getAttribute("name", null);
            String prefix = children[i].getAttribute("prefix", null);
            if (clazzName != null && prefix != null) {
                try {
                    Class clazz = Class.forName(clazzName);
                    this.library.addFunctions(new ClassFunctions(clazz, prefix));
                } catch (ClassNotFoundException cnf) {
                    // ignore
                }
            }
        }

View Full Code Here

            String clazzName = children[i].getAttribute("name", null);
            String prefix = children[i].getAttribute("prefix", null);
            if (clazzName != null && prefix != null) {
                try {
                    Class clazz = Class.forName(clazzName);
                    this.library.addFunctions(new ClassFunctions(clazz, prefix));
                } catch (ClassNotFoundException cnf) {
                    // ignore
                }
            }
        }

View Full Code Here

            new Integer(2), 
            "/integers[2]");
    }
    
    public void testRelativeContextInheritance() {
        context.setFunctions(new ClassFunctions(TestFunctions.class, "test"));
        JXPathContext relative =
            context.getRelativeContext(context.getPointer("nestedBean"));
        
        assertXPathValue(relative, 
            "test:countPointers(strings)",

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            context = JXPathContext.newContext(testBean);
            Variables vars = context.getVariables();
            vars.declareVariable("test", new TestFunctions(4, "test"));


            FunctionLibrary lib = new FunctionLibrary();
            lib.addFunctions(new ClassFunctions(TestFunctions.class, "test"));
            lib.addFunctions(new ClassFunctions(TestFunctions2.class, "test"));
            lib.addFunctions(new PackageFunctions("", "call"));
            lib.addFunctions(
                new PackageFunctions(
                    "org.apache.commons.jxpath.ri.compiler.",
                    "jxpathtest"));
            lib.addFunctions(new PackageFunctions("", null));
            context.setFunctions(lib);
            context.getVariables().declareVariable("List.class", List.class);
            context.getVariables().declareVariable("NodeSet.class", NodeSet.class);
        }
        functions = new ClassFunctions(TestFunctions.class, "test");
        typeConverter = TypeUtils.getTypeConverter();
    }

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            new Integer(2), 
            "/integers[2]");
    }
    
    public void testRelativeContextInheritance() {
        context.setFunctions(new ClassFunctions(TestFunctions.class, "test"));
        JXPathContext relative =
            context.getRelativeContext(context.getPointer("nestedBean"));
        
        assertXPathValue(relative, 
            "test:countPointers(strings)",

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            context = JXPathContext.newContext(new TestBean());
            Variables vars = context.getVariables();
            vars.declareVariable("test", new TestFunctions(4, "test"));


            FunctionLibrary lib = new FunctionLibrary();
            lib.addFunctions(new ClassFunctions(TestFunctions.class, "test"));
            lib.addFunctions(new ClassFunctions(TestFunctions2.class, "test"));
            lib.addFunctions(new PackageFunctions("", "call"));
            lib.addFunctions(
                new PackageFunctions(
                    "org.apache.commons.jxpath.ri.compiler.",
                    "jxpathtest"));
            lib.addFunctions(new PackageFunctions("", null));
            context.setFunctions(lib);
        }
        functions = new ClassFunctions(TestFunctions.class, "test");
    }

View Full Code Here

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org.apache.commons.jxpath.ri.compiler.ExtensionFunctionTest

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