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package org.apache.commons.ognl; |
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import java.util.*; |
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30 | 4 | public class ListPropertyAccessor |
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extends ObjectPropertyAccessor |
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implements PropertyAccessor |
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{ |
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@Override |
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public Object getProperty( Map<String, Object> context, Object target, Object name ) |
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throws OgnlException |
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{ |
39 | 77 | List<?> list = (List<?>) target; |
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|
41 | 77 | if ( name instanceof String ) |
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{ |
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Object result; |
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|
45 | 29 | if ( "size".equals( name ) ) |
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{ |
47 | 8 | result = list.size(); |
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} |
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else |
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{ |
51 | 21 | if ( "iterator".equals( name ) ) |
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{ |
53 | 6 | result = list.iterator(); |
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} |
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else |
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{ |
57 | 15 | if ( "isEmpty".equals( name ) || "empty".equals( name ) ) |
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{ |
59 | 4 | result = list.isEmpty() ? Boolean.TRUE : Boolean.FALSE; |
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} |
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else |
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{ |
63 | 11 | result = super.getProperty( context, target, name ); |
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} |
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} |
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} |
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68 | 29 | return result; |
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} |
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71 | 48 | if ( name instanceof Number ) |
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{ |
73 | 38 | return list.get( ( (Number) name ).intValue() ); |
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} |
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76 | 10 | if ( name instanceof DynamicSubscript ) |
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{ |
78 | 10 | int len = list.size(); |
79 | 10 | switch ( ( (DynamicSubscript) name ).getFlag() ) |
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{ |
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case DynamicSubscript.FIRST: |
82 | 3 | return len > 0 ? list.get( 0 ) : null; |
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case DynamicSubscript.MID: |
84 | 4 | return len > 0 ? list.get( len / 2 ) : null; |
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case DynamicSubscript.LAST: |
86 | 3 | return len > 0 ? list.get( len - 1 ) : null; |
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case DynamicSubscript.ALL: |
88 | 0 | return new ArrayList<Object>( list ); |
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default: |
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break; |
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} |
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} |
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|
94 | 0 | throw new NoSuchPropertyException( target, name ); |
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} |
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@Override |
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public void setProperty( Map<String, Object> context, Object target, Object name, Object value ) |
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throws OgnlException |
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{ |
101 | 4 | if ( name instanceof String && !( (String) name ).contains( "$" ) ) |
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{ |
103 | 0 | super.setProperty( context, target, name, value ); |
104 | 0 | return; |
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} |
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@SuppressWarnings( "unchecked" ) |
108 | 4 | List<Object> list = (List<Object>) target; |
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|
110 | 4 | if ( name instanceof Number ) |
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{ |
112 | 1 | list.set( ( (Number) name ).intValue(), value ); |
113 | 1 | return; |
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} |
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|
116 | 3 | if ( name instanceof DynamicSubscript ) |
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{ |
118 | 3 | int len = list.size(); |
119 | 3 | switch ( ( (DynamicSubscript) name ).getFlag() ) |
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{ |
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case DynamicSubscript.FIRST: |
122 | 1 | if ( len > 0 ) |
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{ |
124 | 1 | list.set( 0, value ); |
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} |
126 | 1 | return; |
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case DynamicSubscript.MID: |
128 | 1 | if ( len > 0 ) |
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{ |
130 | 1 | list.set( len / 2, value ); |
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} |
132 | 1 | return; |
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case DynamicSubscript.LAST: |
134 | 1 | if ( len > 0 ) |
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{ |
136 | 1 | list.set( len - 1, value ); |
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} |
138 | 1 | return; |
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case DynamicSubscript.ALL: |
140 | 0 | if ( !( value instanceof Collection ) ) |
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{ |
142 | 0 | throw new OgnlException( "Value must be a collection" ); |
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} |
144 | 0 | list.clear(); |
145 | 0 | list.addAll( (Collection<?>) value ); |
146 | 0 | return; |
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default: |
148 | 0 | return; |
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} |
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} |
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|
152 | 0 | throw new NoSuchPropertyException( target, name ); |
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} |
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|
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@Override |
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public Class<?> getPropertyClass( OgnlContext context, Object target, Object index ) |
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{ |
158 | 0 | if ( index instanceof String ) |
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{ |
160 | 0 | String key = ( (String) index ).replaceAll( "\"", "" ); |
161 | 0 | if ( "size".equals( key ) ) |
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{ |
163 | 0 | return int.class; |
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} |
165 | 0 | if ( "iterator".equals( key ) ) |
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{ |
167 | 0 | return Iterator.class; |
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} |
169 | 0 | if ( "isEmpty".equals( key ) || "empty".equals( key ) ) |
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{ |
171 | 0 | return boolean.class; |
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} |
173 | 0 | return super.getPropertyClass( context, target, index ); |
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} |
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|
176 | 0 | if ( index instanceof Number ) |
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{ |
178 | 0 | return Object.class; |
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} |
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|
181 | 0 | return null; |
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} |
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|
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@Override |
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public String getSourceAccessor( OgnlContext context, Object target, Object index ) |
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{ |
187 | 37 | String indexStr = index.toString().replaceAll( "\"", "" ); |
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|
189 | 37 | if ( String.class.isInstance( index ) ) |
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{ |
191 | 37 | if ( "size".equals( indexStr ) ) |
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{ |
193 | 4 | context.setCurrentAccessor( List.class ); |
194 | 4 | context.setCurrentType( int.class ); |
195 | 4 | return ".size()"; |
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} |
197 | 33 | if ( "iterator".equals( indexStr ) ) |
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{ |
199 | 4 | context.setCurrentAccessor( List.class ); |
200 | 4 | context.setCurrentType( Iterator.class ); |
201 | 4 | return ".iterator()"; |
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} |
203 | 29 | if ( "isEmpty".equals( indexStr ) || "empty".equals( indexStr ) ) |
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{ |
205 | 2 | context.setCurrentAccessor( List.class ); |
206 | 2 | context.setCurrentType( boolean.class ); |
207 | 2 | return ".isEmpty()"; |
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} |
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} |
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213 | 27 | return getSourceBeanMethod( context, target, index, indexStr, false ); |
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} |
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@Override |
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public String getSourceSetter( OgnlContext context, Object target, Object index ) |
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{ |
219 | 18 | String indexStr = index.toString().replaceAll( "\"", "" ); |
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229 | 18 | return getSourceBeanMethod( context, target, index, indexStr, true ); |
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} |
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private String getSourceBeanMethod( OgnlContext context, Object target, Object index, String indexStr, |
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boolean isSetter ) |
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{ |
235 | 45 | Object currentObject = context.getCurrentObject(); |
236 | 45 | Class<?> currentType = context.getCurrentType(); |
237 | 45 | if ( currentObject != null && !Number.class.isInstance( currentObject ) ) |
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{ |
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try |
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{ |
241 | 10 | if ( isSetter ) |
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{ |
243 | 6 | if ( OgnlRuntime.getWriteMethod( target.getClass(), indexStr ) != null |
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|| !currentType.isPrimitive() ) |
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{ |
246 | 6 | return super.getSourceSetter( context, target, index ); |
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} |
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} |
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else |
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{ |
251 | 4 | if ( OgnlRuntime.getReadMethod( target.getClass(), indexStr ) != null ) |
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{ |
253 | 2 | return super.getSourceAccessor( context, target, index ); |
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} |
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} |
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} |
257 | 6 | catch ( Throwable t ) |
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{ |
259 | 6 | throw OgnlOps.castToRuntime( t ); |
260 | 2 | } |
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} |
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267 | 37 | context.setCurrentAccessor( List.class ); |
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|
271 | 37 | if ( !currentType.isPrimitive() && Number.class.isAssignableFrom( currentType ) ) |
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{ |
273 | 3 | indexStr += "." + OgnlRuntime.getNumericValueGetter( currentType ); |
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} |
275 | 34 | else if ( currentObject != null && Number.class.isAssignableFrom( currentObject.getClass() ) |
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&& !currentType.isPrimitive() ) |
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{ |
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|
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|
280 | 1 | String toString = String.class.isInstance( index ) && currentType != Object.class ? "" : ".toString()"; |
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|
282 | 1 | indexStr = "org.apache.commons.ognl.OgnlOps#getIntValue(" + indexStr + toString + ")"; |
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} |
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|
285 | 37 | context.setCurrentType( Object.class ); |
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|
287 | 37 | return isSetter ? ".set(" + indexStr + ", $3)" : ".get(" + indexStr + ")"; |
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} |
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} |