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package org.apache.commons.contract.constraints; |
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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 ArrayConstraints implements Constraints { |
| 12 | 0 | public static final ArrayConstraints UNCONSTRAINED = new ArrayConstraints(); |
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protected Constraints entryValueDescriptor; |
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| 16 | 0 | public ArrayConstraints() { |
| 17 | 0 | entryValueDescriptor = Unconstrained.UNCONSTRAINED; |
| 18 | 0 | } |
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| 20 | 0 | public ArrayConstraints(Constraints entryValueDescriptor) { |
| 21 | 0 | this.entryValueDescriptor = entryValueDescriptor; |
| 22 | 0 | } |
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public void setEntryValueDescriptor(Constraints entryValueDescriptor) { |
| 25 | 0 | this.entryValueDescriptor = entryValueDescriptor; |
| 26 | 0 | } |
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public Constraints getEntryValueDescriptor() { |
| 29 | 0 | return entryValueDescriptor; |
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} |
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public Object cast(Object value, Context context) throws CastException { |
| 33 | 0 | Object[] array = null; |
| 34 | 0 | if ( value instanceof String[] ) { |
| 35 | 0 | array = new Object[((String[])value).length]; |
| 36 | 0 | for ( int i = 0; i < array.length; i++ ) { |
| 37 | 0 | array[i] = entryValueDescriptor.cast(((String [])value)[i], context); |
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} |
| 39 | 0 | } else if ( value instanceof List ) { |
| 40 | 0 | array = new Object[((List)value).size()]; |
| 41 | 0 | int counter = 0; |
| 42 | 0 | for ( Iterator i = ((List)value).iterator(); i.hasNext(); ) { |
| 43 | 0 | Object entry = i.next(); |
| 44 | 0 | if ( entry instanceof Evaluatable ) { |
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try { |
| 46 | 0 | entry = ((Evaluatable)entry).evaluate(context); |
| 47 | 0 | } catch (Exception e) { |
| 48 | 0 | throw new CastException(new ErrorBundle("evaluatingAnyFailed"), e); |
| 49 | 0 | } |
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} |
| 51 | 0 | array[counter] = entryValueDescriptor.cast(entry, context); |
| 52 | 0 | counter++; |
| 53 | 0 | } |
| 54 | 0 | } else if ( value instanceof Object[] ) { |
| 55 | 0 | array = new Object[((Object[])value).length]; |
| 56 | 0 | for ( int i = 0; i < array.length; i++ ) { |
| 57 | 0 | Object entry = ((Object[])value)[i]; |
| 58 | 0 | if ( entry instanceof Evaluatable ) { |
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try { |
| 60 | 0 | entry = ((Evaluatable)entry).evaluate(context); |
| 61 | 0 | } catch (Exception e) { |
| 62 | 0 | throw new CastException(new ErrorBundle("evaluatingAnyFailed"), e); |
| 63 | 0 | } |
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} |
| 65 | 0 | array[i] = entryValueDescriptor.cast(entry, context); |
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} |
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} else { |
| 68 | 0 | throw new CastException(new ErrorBundle("uncastableArray", new Object[] { value })); |
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} |
| 70 | 0 | return array; |
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} |
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public void validate(Object value, Context context) throws ValidationException { |
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try { |
| 75 | 0 | Object[] array = (Object [])value; |
| 76 | 0 | for ( int i = 0; i < array.length; i++ ) { |
| 77 | 0 | if ( array[i] != null ) { |
| 78 | 0 | entryValueDescriptor.validate(array[i], context); |
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} |
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} |
| 81 | 0 | } catch ( ValidationException exception ) { |
| 82 | 0 | throw new ValidationException(new ErrorBundle("invalidArrayEntry", new Object[] { value }), exception); |
| 83 | 0 | } |
| 84 | 0 | } |
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public TextBundle verboseConstraints() { |
| 87 | 0 | if ( entryValueDescriptor == Unconstrained.UNCONSTRAINED ) { |
| 88 | 0 | return new TextBundle("unconstrainedArray"); |
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} else { |
| 90 | 0 | TextBundle verbosedEntryContrstaints = entryValueDescriptor.verboseConstraints(); |
| 91 | 0 | return new TextBundle("constrainedArray", new String[] { verbosedEntryContrstaints.getText(Locale.getDefault()) }); |
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} |
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} |
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} |