org.argeo.slc/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         public void setName(String name) {
  20                 this.name = name;
  21         }
  22
  23         /** Both value and bean cannot be set. */
  24         public void setValue(String value) {
  25                 if (getBean() != null || overrideList != null) {
  26                         throw new BuildException("Value already set.");
  27                 }
  28                 this.value = value;
  29         }
  30
  31         @Override
  32         public void setBean(String bean) {
  33                 if (value != null || overrideList != null) {
  34                         throw new BuildException("Value already set.");
  35                 }
  36                 super.setBean(bean);
  37         }
  38
  39         public OverrideList createList() {
  40                 if (value != null || getBean() != null) {
  41                         throw new BuildException("Value already set.");
  42                 }
  43                 if (overrideList == null) {
  44                         overrideList = new OverrideList();
  45                 } else {
  46                         throw new BuildException("Only one list can be declared");
  47                 }
  48                 return overrideList;
  49         }
  50
  51         /**
  52          * The related object: the value if a value had been set or an instance of
  53          * the bean if not.
  54          */
  55         public Object getObject() {
  56                 if (value != null) {
  57                         return value;
  58                 } else if (getBean() != null) {
  59                         return getBeanInstance();
  60                 } else if (overrideList != null) {
  61                         return overrideList.getAsObjectList();
  62                 } else {
  63                         throw new BuildException("Value or bean not set.");
  64                 }
  65         }
  66
  67         /** List of overrides */
  68         protected class OverrideList {
  69                 private List<OverrideArg> list = new Vector<OverrideArg>();
  70
  71                 public OverrideArg createOverride() {
  72                         OverrideArg overrideArg = new OverrideArg();
  73                         list.add(overrideArg);
  74                         return overrideArg;
  75                 }
  76
  77                 public List<Object> getAsObjectList() {
  78                         List<Object> objectList = new Vector<Object>();
  79                         for (OverrideArg arg : list) {
  80                                 objectList.add(arg.getObject());
  81                         }
  82                         return objectList;
  83                 }
  84         }
  85 }