litesoft
@ 151
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 |
// This Source Code is in the Public Domain per: http://litesoft.org/License.txt package org.litesoft.orsup.base; public abstract class POInstanceQueryFilter extends POQueryFilter { abstract public boolean isPO_Acceptable( PersistentObject<?> pPO ); protected POInstanceQueryFilter( MetaDataForPO pMetaDataForPO ) { super( pMetaDataForPO ); } public static POInstanceQueryFilter NONE_ACCEPTABLE = new POInstanceQueryFilter( null ) { @Override public TYPE getType() { return TYPE.NoneAcceptable; } @Override public boolean isPO_Acceptable( PersistentObject<?> pPO ) { return false; } }; public static POInstanceQueryFilter ALL_ACCEPTABLE = new POInstanceQueryFilter( null ) { @Override public TYPE getType() { return TYPE.AllAcceptable; } @Override public boolean isPO_Acceptable( PersistentObject<?> pPO ) { return true; } }; public static class Force { public static POInstanceQueryFilter type( POQueryFilter pQueryFilter ) { if ( pQueryFilter instanceof POInstanceQueryFilter ) { return (POInstanceQueryFilter) pQueryFilter; } if ( pQueryFilter != null ) { switch ( pQueryFilter.getType() ) { case NoneAcceptable: return POInstanceQueryFilter.NONE_ACCEPTABLE; case AllAcceptable: break; case PotentialFilteringByKey: MetaDataForPO zMetaDataForPO = pQueryFilter.getMetaDataForPO(); if ( zMetaDataForPO != null ) { AttributeAccessorSCD<PersistentObject<?>>[] zSCDs = zMetaDataForPO.getKeySet().getKeyAttributeAccessorSCDs(); if ( (zSCDs != null) && (zSCDs.length == 1) ) { return new InstanceToKeyAdaptor( zMetaDataForPO, zSCDs[0], (POKeyQueryFilter) pQueryFilter ); } } throw new IllegalStateException( "PO Query Filter is a Key Filter" ); case PotentialFilteringByInstance: default: throw new Error( "Combo of '" + pQueryFilter.getType() + "' and " + pQueryFilter.getClass() ); } } return POInstanceQueryFilter.ALL_ACCEPTABLE; } } private static class InstanceToKeyAdaptor extends POInstanceQueryFilter { private AttributeAccessorSCD<PersistentObject<?>> mKeySCD; private POKeyQueryFilter mProxiedKeyFilter; public InstanceToKeyAdaptor( MetaDataForPO pMetaDataForPO, AttributeAccessorSCD<PersistentObject<?>> pKeySCD, POKeyQueryFilter pProxiedKeyFilter ) { super( pMetaDataForPO ); mKeySCD = pKeySCD; mProxiedKeyFilter = pProxiedKeyFilter; } @Override public boolean isPO_Acceptable( PersistentObject<?> pPO ) { return mProxiedKeyFilter.isPO_KeyAcceptable( mKeySCD.getValueOnPO( pPO ) ); } @Override public TYPE getType() { return TYPE.PotentialFilteringByInstance; } } } |