|
1
50 package org.apache.avalon.excalibur.pool;
51
52 import org.apache.avalon.framework.activity.Initializable;
53 import org.apache.avalon.framework.thread.ThreadSafe;
54
55
64 public class HardResourceLimitingPool
65 extends SoftResourceLimitingPool
66 implements ThreadSafe, Initializable
67 {
68 public HardResourceLimitingPool( final ObjectFactory factory, final PoolController controller )
69 throws Exception 
70 {
71 this( factory, controller, DEFAULT_POOL_SIZE, DEFAULT_POOL_SIZE );
72 }
73
74 public HardResourceLimitingPool( final ObjectFactory factory, final PoolController controller, int max )
75 throws Exception
76 {
77 this( factory, controller, controller.grow(), max );
78 }
79
80 public HardResourceLimitingPool( final ObjectFactory factory, final PoolController controller, int initial, int max )
81 throws Exception
82 {
83 super( factory, controller, initial, max );
84 }
85
86 public HardResourceLimitingPool( final ObjectFactory factory )
87 throws Exception
88 {
89 this( factory, null );
90 }
91
92 public HardResourceLimitingPool( final ObjectFactory factory,
93 final int initial,
94 final int maximum )
95 throws Exception
96 {
97 this( factory, null, initial, maximum );
98 }
99
100 public HardResourceLimitingPool( final ObjectFactory factory, final int initial )
101 throws Exception
102 {
103 this( factory, initial, initial );
104 }
105
106 public HardResourceLimitingPool( final Class clazz, final int initial, final int maximum )
107 throws NoSuchMethodException , Exception
108 {
109 this( new DefaultObjectFactory( clazz ), initial, maximum );
110 }
111
112 public HardResourceLimitingPool( final Class clazz, final int initial )
113 throws NoSuchMethodException , Exception
114 {
115 this( clazz, initial, initial );
116 }
117
118 public void initialize()
119 {
120 try
121 {
122 super.initialize();
123 }
124 catch( final Exception e )
125 {
126 if( getLogger().isDebugEnabled() )
127 {
128 getLogger().debug( "Caught init exception", e );
129 }
130 }
131 }
132
133 protected Poolable newPoolable() throws Exception
134 {
135 if( this.size() < m_max )
136 {
137 return super.newPoolable();
138 }
139
140 throw new InstantiationException ( "Ran out of resources to instantiate" );
141 }
142
143 protected void internalGrow( int amount )
144 throws Exception
145 {
146 super.internalGrow( ( ( this.size() + amount ) < m_max ) ? amount : m_max - this.size() );
147 }
148 }
149 |
Popular Tags |
Java API By Example, From Geeks To Geeks.