Clover coverage report - Drools - 2.0-rc2
Coverage timestamp: Wed May 11 2005 07:12:26 BST
file stats: LOC: 200   Methods: 9
NCLOC: 86   Classes: 1
 
 Source file Conditionals Statements Methods TOTAL
PythonCondition.java 25% 59.1% 55.6% 51.3%
coverage coverage
 1    package org.drools.semantics.python;
 2   
 3    /*
 4    * $Id: PythonCondition.java,v 1.3 2004/12/29 15:55:09 mproctor Exp $
 5    *
 6    * Copyright 2002 (C) The Werken Company. All Rights Reserved.
 7    *
 8    * Redistribution and use of this software and associated documentation
 9    * ("Software"), with or without modification, are permitted provided that the
 10    * following conditions are met:
 11    *
 12    * 1. Redistributions of source code must retain copyright statements and
 13    * notices. Redistributions must also contain a copy of this document.
 14    *
 15    * 2. Redistributions in binary form must reproduce the above copyright notice,
 16    * this list of conditions and the following disclaimer in the documentation
 17    * and/or other materials provided with the distribution.
 18    *
 19    * 3. The name "drools" must not be used to endorse or promote products derived
 20    * from this Software without prior written permission of The Werken Company.
 21    * For written permission, please contact bob@werken.com.
 22    *
 23    * 4. Products derived from this Software may not be called "drools" nor may
 24    * "drools" appear in their names without prior written permission of The Werken
 25    * Company. "drools" is a registered trademark of The Werken Company.
 26    *
 27    * 5. Due credit should be given to The Werken Company.
 28    * (http://drools.werken.com/).
 29    *
 30    * THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS ``AS IS''
 31    * AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 32    * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 33    * ARE DISCLAIMED. IN NO EVENT SHALL THE WERKEN COMPANY OR ITS CONTRIBUTORS BE
 34    * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 35    * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 36    * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 37    * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 38    * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 39    * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 40    * POSSIBILITY OF SUCH DAMAGE.
 41    *
 42    */
 43   
 44    import java.util.Iterator;
 45    import java.util.NoSuchElementException;
 46   
 47    import org.drools.rule.Declaration;
 48    import org.drools.rule.Rule;
 49    import org.drools.spi.Condition;
 50    import org.drools.spi.ConditionException;
 51    import org.drools.spi.Tuple;
 52    import org.python.core.PyObject;
 53    import org.python.core.__builtin__;
 54   
 55    /**
 56    * Python expression semantics <code>Condition</code>.
 57    *
 58    * @author <a href="mailto:bob@eng.werken.com">bob mcwhirter </a>
 59    */
 60    public class PythonCondition extends PythonInterp implements Condition
 61    {
 62    // ------------------------------------------------------------
 63    // Instance members
 64    // ------------------------------------------------------------
 65   
 66    /** Required declarations. */
 67    private Declaration[] requiredDeclarations;
 68   
 69    // ------------------------------------------------------------
 70    // Constructors
 71    // ------------------------------------------------------------
 72   
 73    /**
 74    * Construct.
 75    */
 76  21 public PythonCondition( String text,
 77    Rule rule ) throws Exception
 78    {
 79  21 super( text,
 80    rule,
 81    "eval" );
 82   
 83  21 PythonExprAnalyzer analyzer = new PythonExprAnalyzer();
 84   
 85  21 this.requiredDeclarations = analyzer.analyze( getNode( ),
 86    rule.getParameterDeclarations( ) );
 87    }
 88   
 89    // ------------------------------------------------------------
 90    // Instance methods
 91    // ------------------------------------------------------------
 92   
 93    // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 94    // org.drools.spi.Condition
 95    // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 96   
 97    /**
 98    * Determine if the supplied <code>Tuple</code> is allowed by this
 99    * condition.
 100    *
 101    * @param tuple The <code>Tuple</code> to test.
 102    *
 103    * @return <code>true</code> if the <code>Tuple</code> passes this
 104    * condition, else <code>false</code>.
 105    *
 106    * @throws ConditionException if an error occurs during filtering.
 107    */
 108  21 public boolean isAllowed( Tuple tuple ) throws ConditionException
 109    {
 110  21 try
 111    {
 112   
 113  21 PyObject result = __builtin__.eval( getCode( ),
 114    setUpDictionary( tuple, declarationIterator( ) ),
 115    getGlobals( ) );
 116   
 117  20 Object answer = result.__tojava__( Object.class );
 118   
 119  20 if ( !( answer instanceof Number ) )
 120    {
 121  0 throw new NonBooleanExprException( getText( ) );
 122    }
 123   
 124  20 return ( ( Number ) answer ).intValue( ) != 0;
 125    }
 126    catch ( Exception e )
 127    {
 128  1 throw new ConditionException( e,
 129    getRule( ),
 130    getText( ) );
 131    }
 132    }
 133   
 134    /**
 135    * Retrieve the array of <code>Declaration</code> s required by this condition to perform its duties.
 136    *
 137    * @return The array of <code>Declarations</code> expected on incoming <code>Tuples</code>.
 138    */
 139  0 public Declaration[] getRequiredTupleMembers()
 140    {
 141  0 return this.requiredDeclarations;
 142    }
 143   
 144    // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 145   
 146  0 public int hashCode()
 147    {
 148  0 return this.getText( ).hashCode( );
 149    }
 150   
 151  0 public boolean equals( Object object )
 152    {
 153  0 if ( this == object )
 154    {
 155  0 return true;
 156    }
 157   
 158  0 if ( object == null || getClass( ) != object.getClass( ) )
 159    {
 160  0 return false;
 161    }
 162   
 163  0 return this.getText( ).equals( ( ( PythonInterp ) object ).getText( ) );
 164    }
 165   
 166    /**
 167    * PythonInterp needs a declaration iterator.
 168    * BlockConsequence uses the Iterator from Set.
 169    * So we emulate Iterator here so PythonInterp can be used for both.
 170    * @return
 171    */
 172  21 public Iterator declarationIterator( )
 173    {
 174  21 return new Iterator()
 175    {
 176    private int index=0;
 177   
 178  0 public void remove()
 179    {
 180    //null;
 181    }
 182   
 183  59 public boolean hasNext()
 184    {
 185  59 return (index < requiredDeclarations.length);
 186    }
 187   
 188  19 public Object next()
 189    {
 190  19 if ( !hasNext( ) )
 191    {
 192  0 throw new NoSuchElementException( );
 193    }
 194  19 return requiredDeclarations[this.index++];
 195    }
 196   
 197    };
 198    }
 199   
 200    }