Examples of org.apache.commons.digester3.Digester.peek()

Class org.apache.commons.digester3.Digester

Examples of org.apache.commons.digester3.Digester.peek()

org.apache.commons.digester3.Digester.peek()
Return the top object on the stack without removing it. If there are no objects on the stack, return null. @param < T> the type used to auto-cast the returned object to the assigned variable type @return the top object on the stack without removing it.

        BigDecimal archimedesAveragePi = new BigDecimal( "3.1418" );
        String testStackName = "org.apache.commons.digester3.tests.testNamedStackPushPeekPop";
        Digester digester = new Digester();
        assertTrue( "Stack starts empty:", digester.isEmpty( testStackName ) );
        digester.push( testStackName, archimedesAveragePi );
        assertEquals( "Peeked value:", archimedesAveragePi, digester.peek( testStackName ) );
        assertEquals( "Popped value:", archimedesAveragePi, digester.pop( testStackName ) );
        assertTrue( "Stack ends empty:", digester.isEmpty( testStackName ) );


        digester.push( testStackName, "1" );
        digester.push( testStackName, "2" );

View Full Code Here


        digester.push( testStackName, "1" );
        digester.push( testStackName, "2" );
        digester.push( testStackName, "3" );


        assertEquals( "Peek#1", "1", digester.peek( testStackName, 2 ) );
        assertEquals( "Peek#2", "2", digester.peek( testStackName, 1 ) );
        assertEquals( "Peek#3", "3", digester.peek( testStackName, 0 ) );
        assertEquals( "Peek#3a", "3", digester.peek( testStackName ) );


        try

View Full Code Here

        digester.push( testStackName, "1" );
        digester.push( testStackName, "2" );
        digester.push( testStackName, "3" );


        assertEquals( "Peek#1", "1", digester.peek( testStackName, 2 ) );
        assertEquals( "Peek#2", "2", digester.peek( testStackName, 1 ) );
        assertEquals( "Peek#3", "3", digester.peek( testStackName, 0 ) );
        assertEquals( "Peek#3a", "3", digester.peek( testStackName ) );


        try
        {

View Full Code Here

        digester.push( testStackName, "2" );
        digester.push( testStackName, "3" );


        assertEquals( "Peek#1", "1", digester.peek( testStackName, 2 ) );
        assertEquals( "Peek#2", "2", digester.peek( testStackName, 1 ) );
        assertEquals( "Peek#3", "3", digester.peek( testStackName, 0 ) );
        assertEquals( "Peek#3a", "3", digester.peek( testStackName ) );


        try
        {
            // peek beyond stack

View Full Code Here

        digester.push( testStackName, "3" );


        assertEquals( "Peek#1", "1", digester.peek( testStackName, 2 ) );
        assertEquals( "Peek#2", "2", digester.peek( testStackName, 1 ) );
        assertEquals( "Peek#3", "3", digester.peek( testStackName, 0 ) );
        assertEquals( "Peek#3a", "3", digester.peek( testStackName ) );


        try
        {
            // peek beyond stack
            digester.peek( testStackName, 3 );

View Full Code Here

        assertEquals( "Peek#3a", "3", digester.peek( testStackName ) );


        try
        {
            // peek beyond stack
            digester.peek( testStackName, 3 );
            fail( "Peek#4 failed to throw an exception." );
        }
        catch ( EmptyStackException ex )
        {
            // ok, expected

View Full Code Here

        }


        try
        {
            // peek a nonexistent named stack
            digester.peek( "no.such.stack", 0 );
            fail( "Peeking a non-existent stack failed to throw an exception." );
        }
        catch ( EmptyStackException ex )
        {
            // ok, expected

View Full Code Here

        }


        try
        {


            digester.peek( testStackName );
            fail( "Expected an EmptyStackException" );


        }
        catch ( EmptyStackException e )
        {

View Full Code Here


        digester.push( testStackName, "Some test value" );
        assertFalse( "A named stack that has an object pushed onto it should be not empty",
                     digester.isEmpty( testStackName ) );


        digester.peek( testStackName );
        assertFalse( "Peek should not effect whether the stack is empty", digester.isEmpty( testStackName ) );


        digester.pop( testStackName );
        assertTrue( "A named stack that has it's last object popped is empty", digester.isEmpty( testStackName ) );
    }

View Full Code Here

        d.push( obj1 );
        d.push( obj2 );
        d.push( obj3 );
        d.push( obj4 );


        assertNotNull( d.peek( 0 ) );
        // for obj4, a copy should have been pushed
        assertNotSame( obj4, d.peek( 0 ) );
        assertEquals( obj4, d.peek( 0 ) );
        // for obj3, replacement only occurs on pop
        assertSame( obj3, d.peek( 1 ) );

View Full Code Here

0 1 2 3

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.