org.argeo.slc.core/src/main/java/org/argeo/slc/ant/spring/OverrideArg.java

   1 package org.argeo.slc.ant.spring;
   2
   3 import java.util.List;
   4 import java.util.Vector;
   5
   6 import org.apache.tools.ant.BuildException;
   7
   8 /** Ant type allowing to override bean properties. */
   9 public class OverrideArg extends AbstractSpringArg {
  10         private String name;
  11         private Object value;
  12         private OverrideList overrideList;
  13
  14         /** The name of the property to override. */
  15         public String getName() {
  16                 return name;
  17         }
  18
  19         /** Sets the name. */
  20         public void setName(String name) {
  21                 this.name = name;
  22         }
  23
  24         /** Both value and bean cannot be set. */
  25         public void setValue(String value) {
  26                 if (getBean() != null || overrideList != null) {
  27                         throw new BuildException("Value already set.");
  28                 }
  29                 this.value = value;
  30         }
  31
  32         @Override
  33         public void setBean(String bean) {
  34                 if (value != null || overrideList != null) {
  35                         throw new BuildException("Value already set.");
  36                 }
  37                 super.setBean(bean);
  38         }
  39
  40         /** Creates override list sub tag. */
  41         public OverrideList createList() {
  42                 if (value != null || getBean() != null) {
  43                         throw new BuildException("Value already set.");
  44                 }
  45                 if (overrideList == null) {
  46                         overrideList = new OverrideList();
  47                 } else {
  48                         throw new BuildException("Only one list can be declared");
  49                 }
  50                 return overrideList;
  51         }
  52
  53         /**
  54          * The related object: the value if a value had been set or an instance of
  55          * the bean if not.
  56          */
  57         public Object getObject() {
  58                 if (value != null) {
  59                         return value;
  60                 } else if (getBean() != null) {
  61                         return getBeanInstance();
  62                 } else if (overrideList != null) {
  63                         return overrideList.getAsObjectList();
  64                 } else {
  65                         throw new BuildException("Value or bean not set.");
  66                 }
  67         }
  68
  69         /** List of overrides */
  70         protected class OverrideList {
  71                 private List<OverrideArg> list = new Vector<OverrideArg>();
  72
  73                 /** Creates override sub tag. */
  74                 public OverrideArg createOverride() {
  75                         OverrideArg overrideArg = new OverrideArg();
  76                         list.add(overrideArg);
  77                         return overrideArg;
  78                 }
  79
  80                 /** Gets as list of objects. */
  81                 public List<Object> getAsObjectList() {
  82                         List<Object> objectList = new Vector<Object>();
  83                         for (OverrideArg arg : list) {
  84                                 objectList.add(arg.getObject());
  85                         }
  86                         return objectList;
  87                 }
  88         }
  89 }