|
| 1 | +package com.google.gcloud.datastore; |
| 2 | + |
| 3 | +import com.google.api.services.datastore.DatastoreV1; |
| 4 | +import com.google.common.collect.ImmutableSortedMap; |
| 5 | +import com.google.gcloud.datastore.Value.Type; |
| 6 | + |
| 7 | +import java.util.Arrays; |
| 8 | +import java.util.HashMap; |
| 9 | +import java.util.List; |
| 10 | +import java.util.Map; |
| 11 | +import java.util.Set; |
| 12 | + |
| 13 | + |
| 14 | +// TODO: make entity and Partial entity extends it and to tests + documentaion the option |
| 15 | +// of list and direct value set/get. |
| 16 | + |
| 17 | +/** |
| 18 | + * A container of properties (name and Value pairs). |
| 19 | + */ |
| 20 | +abstract class PropertyContainer |
| 21 | + <E extends PropertyContainer<E, B>, B extends PropertyContainer.Builder<E, B>> |
| 22 | + extends Serializable<DatastoreV1.Entity> { |
| 23 | + |
| 24 | + private static final long serialVersionUID = 8175618724683792766L; |
| 25 | + |
| 26 | + private final transient ImmutableSortedMap<String, Value<?, ?, ?>> properties; |
| 27 | + |
| 28 | + protected abstract static class Builder |
| 29 | + <E extends PropertyContainer<E, B>, B extends Builder<E, B>> { |
| 30 | + |
| 31 | + private final Map<String, Value<?, ?, ?>> properties; |
| 32 | + |
| 33 | + public Builder() { |
| 34 | + properties = new HashMap<>(); |
| 35 | + } |
| 36 | + |
| 37 | + public Builder(PropertyContainer<E, B> entity) { |
| 38 | + properties = new HashMap<>(entity.properties()); |
| 39 | + } |
| 40 | + |
| 41 | + @SuppressWarnings("unchecked") |
| 42 | + protected B self() { |
| 43 | + return (B) this; |
| 44 | + } |
| 45 | + |
| 46 | + public B clearProperties() { |
| 47 | + properties.clear(); |
| 48 | + return self(); |
| 49 | + } |
| 50 | + |
| 51 | + public B removeProperty(String name) { |
| 52 | + properties.remove(name); |
| 53 | + return self(); |
| 54 | + } |
| 55 | + |
| 56 | + public B setProperty(String name, Value<?, ?, ?> value) { |
| 57 | + properties.put(name, value); |
| 58 | + return self(); |
| 59 | + } |
| 60 | + |
| 61 | + public B setNullProperty(String name) { |
| 62 | + properties.put(name, new NullValue()); |
| 63 | + return self(); |
| 64 | + } |
| 65 | + |
| 66 | + public B setStringProperty(String name, String value) { |
| 67 | + properties.put(name, new StringValue(value)); |
| 68 | + return self(); |
| 69 | + } |
| 70 | + |
| 71 | + public B setLongProperty(String name, long value) { |
| 72 | + properties.put(name, new LongValue(value)); |
| 73 | + return self(); |
| 74 | + } |
| 75 | + |
| 76 | + public B setDoubleProperty(String name, double value) { |
| 77 | + properties.put(name, new DoubleValue(value)); |
| 78 | + return self(); |
| 79 | + } |
| 80 | + |
| 81 | + public B setBooleanProperty(String name, boolean value) { |
| 82 | + properties.put(name, new BooleanValue(value)); |
| 83 | + return self(); |
| 84 | + } |
| 85 | + |
| 86 | + public B setDateAndTimeProperty(String name, DateAndTime value) { |
| 87 | + properties.put(name, new DateAndTimeValue(value)); |
| 88 | + return self(); |
| 89 | + } |
| 90 | + |
| 91 | + public B setKeyProperty(String name, Key value) { |
| 92 | + properties.put(name, new KeyValue(value)); |
| 93 | + return self(); |
| 94 | + } |
| 95 | + |
| 96 | + public B setPartialEntityProperty(String name, PartialEntity value) { |
| 97 | + properties.put(name, new PartialEntityValue(value)); |
| 98 | + return self(); |
| 99 | + } |
| 100 | + |
| 101 | + public B setListProperty(String name, List<Value<?, ?, ?>> values) { |
| 102 | + properties.put(name, new ListValue(values)); |
| 103 | + return self(); |
| 104 | + } |
| 105 | + |
| 106 | + public B setListProperty(String name, Value<?, ?, ?>... value) { |
| 107 | + properties.put(name, new ListValue(Arrays.asList(value))); |
| 108 | + return self(); |
| 109 | + } |
| 110 | + |
| 111 | + public B setBlobProperty(String name, Blob value) { |
| 112 | + properties.put(name, new BlobValue(value)); |
| 113 | + return self(); |
| 114 | + } |
| 115 | + |
| 116 | + public E build() { |
| 117 | + return build(ImmutableSortedMap.copyOf(properties)); |
| 118 | + } |
| 119 | + |
| 120 | + protected abstract E build(ImmutableSortedMap<String, Value<?, ?, ?>> properties); |
| 121 | + } |
| 122 | + |
| 123 | + protected PropertyContainer(ImmutableSortedMap<String, Value<?, ?, ?>> properties) { |
| 124 | + this.properties = properties; |
| 125 | + } |
| 126 | + |
| 127 | + /** |
| 128 | + * Returns {@code true} if there is such property with the given {@code name}. |
| 129 | + */ |
| 130 | + public boolean hasProperty(String name) { |
| 131 | + return properties.containsKey(name); |
| 132 | + } |
| 133 | + |
| 134 | + /** |
| 135 | + * Returns the {@link Value} of property with the given {@code name}. |
| 136 | + * |
| 137 | + * @throws DatastoreServiceException if not such property. |
| 138 | + */ |
| 139 | + public <V extends Value<?, ?, ?>> V property(String name) { |
| 140 | + @SuppressWarnings("unchecked") |
| 141 | + V property = (V) properties.get(name); |
| 142 | + if (property == null) { |
| 143 | + throw DatastoreServiceException.throwInvalidRequest("No such property %s", name); |
| 144 | + } |
| 145 | + return property; |
| 146 | + } |
| 147 | + |
| 148 | + public Type propertyType(String name) { |
| 149 | + return property(name).type(); |
| 150 | + } |
| 151 | + |
| 152 | + public boolean isNullProperty(String name) { |
| 153 | + return property(name) instanceof NullValue; |
| 154 | + } |
| 155 | + |
| 156 | + public String stringProperty(String name) { |
| 157 | + return ((StringValue) property(name)).get(); |
| 158 | + } |
| 159 | + |
| 160 | + public long longProperty(String name) { |
| 161 | + return ((LongValue) property(name)).get(); |
| 162 | + } |
| 163 | + |
| 164 | + public double doubleProperty(String name) { |
| 165 | + return ((DoubleValue) property(name)).get(); |
| 166 | + } |
| 167 | + |
| 168 | + public boolean booleanProperty(String name) { |
| 169 | + return ((BooleanValue) property(name)).get(); |
| 170 | + } |
| 171 | + |
| 172 | + public DateAndTime dateAndTimeProperty(String name) { |
| 173 | + return ((DateAndTimeValue) property(name)).get(); |
| 174 | + } |
| 175 | + |
| 176 | + public Key keyProperty(String name) { |
| 177 | + return ((KeyValue) property(name)).get(); |
| 178 | + } |
| 179 | + |
| 180 | + public PartialEntity partialEntityProperty(String name) { |
| 181 | + return ((PartialEntityValue) property(name)).get(); |
| 182 | + } |
| 183 | + |
| 184 | + public List<? extends Value<?, ?, ?>> listProperty(String name) { |
| 185 | + return ((ListValue) property(name)).get(); |
| 186 | + } |
| 187 | + |
| 188 | + public Blob blobProperty(String name) { |
| 189 | + return ((BlobValue) property(name)).get(); |
| 190 | + } |
| 191 | + |
| 192 | + /** |
| 193 | + * Returns the property's value as {@code RawValue}. |
| 194 | + */ |
| 195 | + public RawValue rawValueProperty(String name) { |
| 196 | + Value<?, ?, ?> value = property(name); |
| 197 | + if (value instanceof RawValue) { |
| 198 | + return (RawValue) value; |
| 199 | + } |
| 200 | + return new RawValue(value.toPb()); |
| 201 | + } |
| 202 | + |
| 203 | + public Set<String> propertyNames() { |
| 204 | + return properties.keySet(); |
| 205 | + } |
| 206 | + |
| 207 | + /** |
| 208 | + * Returns a new builder for this entity (values are copied). |
| 209 | + */ |
| 210 | + public abstract B builder(); |
| 211 | + |
| 212 | + ImmutableSortedMap<String, Value<?, ?, ?>> properties() { |
| 213 | + return properties; |
| 214 | + } |
| 215 | + |
| 216 | + @Override |
| 217 | + public int hashCode() { |
| 218 | + return properties.hashCode(); |
| 219 | + } |
| 220 | + |
| 221 | + @Override |
| 222 | + public boolean equals(Object obj) { |
| 223 | + if (!(obj instanceof PropertyContainer)) { |
| 224 | + return false; |
| 225 | + } |
| 226 | + return properties.equals(((PropertyContainer<?, ?>) obj).properties); |
| 227 | + } |
| 228 | + |
| 229 | + @Override |
| 230 | + protected final DatastoreV1.Entity toPb() { |
| 231 | + DatastoreV1.Entity.Builder entityPb = DatastoreV1.Entity.newBuilder(); |
| 232 | + for (Map.Entry<String, Value<?, ?, ?>> entry : properties.entrySet()) { |
| 233 | + DatastoreV1.Property.Builder propertyPb = DatastoreV1.Property.newBuilder(); |
| 234 | + propertyPb.setName(entry.getKey()); |
| 235 | + propertyPb.setValue(entry.getValue().toPb()); |
| 236 | + entityPb.addProperty(propertyPb.build()); |
| 237 | + } |
| 238 | + populateEntityBuilder(entityPb); |
| 239 | + return entityPb.build(); |
| 240 | + } |
| 241 | + |
| 242 | + protected abstract void populateEntityBuilder(DatastoreV1.Entity.Builder entity); |
| 243 | +} |
0 commit comments