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package org.apache.commons.contract.constraints; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.Locale; |
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import org.apache.commons.contract.Context; |
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import org.apache.commons.i18n.bundles.ErrorBundle; |
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import org.apache.commons.i18n.bundles.TextBundle; |
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public class ListConstraints implements Constraints { |
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protected Constraints entryValueDescriptor; |
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|
| 15 | 0 | public ListConstraints() { |
| 16 | 0 | entryValueDescriptor = Unconstrained.UNCONSTRAINED; |
| 17 | 0 | } |
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|
| 19 | 0 | public ListConstraints(Constraints entryValueDescriptor) { |
| 20 | 0 | this.entryValueDescriptor = entryValueDescriptor; |
| 21 | 0 | } |
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|
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public void setEntryValueDescriptor(Constraints entryValueDescriptor) { |
| 24 | 0 | this.entryValueDescriptor = entryValueDescriptor; |
| 25 | 0 | } |
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|
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public Constraints getEntryValueDescriptor() { |
| 28 | 0 | return entryValueDescriptor; |
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} |
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|
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public Object cast(Object value, Context context) throws CastException { |
| 32 | 0 | List list = new ArrayList(); |
| 33 | 0 | if ( value instanceof String[] ) { |
| 34 | 0 | for ( int i = 0; i < ((String[])value).length; i++ ) { |
| 35 | 0 | list.add(entryValueDescriptor.cast(((String [])value)[i], context)); |
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} |
| 37 | 0 | } else if ( value instanceof List ) { |
| 38 | 0 | for ( Iterator i = ((List)value).iterator(); i.hasNext(); ) { |
| 39 | 0 | Object entry = i.next(); |
| 40 | 0 | if ( entry instanceof Evaluatable ) { |
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try { |
| 42 | 0 | entry = ((Evaluatable)entry).evaluate(context); |
| 43 | 0 | } catch (Exception e) { |
| 44 | 0 | throw new CastException(new ErrorBundle("evaluatingAnyFailed"), e); |
| 45 | 0 | } |
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} |
| 47 | 0 | list.add(entryValueDescriptor.cast(entry, context)); |
| 48 | 0 | } |
| 49 | 0 | } else if ( value instanceof Object[] ) { |
| 50 | 0 | for ( int i = 0; i < ((Object [])value).length; i++ ) { |
| 51 | 0 | Object entry = ((Object [])value)[i]; |
| 52 | 0 | if ( entry instanceof Evaluatable ) { |
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try { |
| 54 | 0 | entry = ((Evaluatable)entry).evaluate(context); |
| 55 | 0 | } catch (Exception e) { |
| 56 | 0 | throw new CastException(new ErrorBundle("evaluatingAnyFailed"), e); |
| 57 | 0 | } |
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} |
| 59 | 0 | list.add(entryValueDescriptor.cast(entry, context)); |
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} |
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} else { |
| 62 | 0 | throw new CastException(new ErrorBundle("uncastableList", new Object[] { value })); |
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} |
| 64 | 0 | return list; |
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} |
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|
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public void validate(Object value, Context context) throws ValidationException { |
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try { |
| 69 | 0 | List list = (List)value; |
| 70 | 0 | for ( Iterator i = list.iterator(); i.hasNext();) { |
| 71 | 0 | Object entry = i.next(); |
| 72 | 0 | if ( entry != null ) { |
| 73 | 0 | entryValueDescriptor.validate(entry, context); |
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} |
| 75 | 0 | } |
| 76 | 0 | } catch ( ValidationException exception ) { |
| 77 | 0 | throw new ValidationException(new ErrorBundle("invalidListEntry", new Object[] { value }), exception); |
| 78 | 0 | } |
| 79 | 0 | } |
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|
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public TextBundle verboseConstraints() { |
| 82 | 0 | if ( entryValueDescriptor == Unconstrained.UNCONSTRAINED ) { |
| 83 | 0 | return new TextBundle("unconstrainedList"); |
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} else { |
| 85 | 0 | TextBundle verbosedEntryContrstaints = entryValueDescriptor.verboseConstraints(); |
| 86 | 0 | return new TextBundle("constrainedList", new String[] { verbosedEntryContrstaints.getText(Locale.getDefault()) }); |
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} |
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} |
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} |