Initialize gradle project

1 files changed, 232 insertions, 0 deletions

diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/model/ValueSet.java b/src/main/java/pl/edu/mimuw/cloudatlas/model/ValueSet.java
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+/**
+ * Copyright (c) 2014, University of Warsaw
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package pl.edu.mimuw.cloudatlas.model;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Set;
+
+import pl.edu.mimuw.cloudatlas.model.TypeCollection;
+import pl.edu.mimuw.cloudatlas.model.Value;
+import pl.edu.mimuw.cloudatlas.model.ValueSet;
+
+/**
+ * A value representing a set of values of the specified type. Implements <code>Set</code> interface.
+ * <p>
+ * All constructors take a type of elements stored in this set. This type is checked when adding elements to the set and
+ * an <code>IllegalArgumentException</code> is thrown in case of a mismatch.
+ *
+ * @see java.util.Set
+ */
+public class ValueSet extends ValueSimple<Set<Value>> implements Set<Value> {
+    private TypeCollection type;
+
+    /**
+     * Creates a new <code>ValueSet</code> containing all the elements in the specified set.
+     *
+     * @param value a set which content will be copied to this value
+     * @param elementType type of elements stored in this set
+     */
+    public ValueSet(Set<Value> value, Type elementType) {
+        this(elementType);
+        if(value != null)
+            setValue(value);
+    }
+
+    /**
+     * Creates an empty set.
+     *
+     * @param elementType type of elements stored in this set
+     */
+    public ValueSet(Type elementType) {
+        super(new HashSet<Value>());
+        type = new TypeCollection(Type.PrimaryType.SET, elementType);
+    }
+
+    @Override
+    public Type getType() {
+        return type;
+    }
+
+    @Override
+    public Value getDefaultValue() {
+        return new ValueSet(((TypeCollection)this.getType()).getElementType());
+    }
+
+    /**
+     * Gets a <code>Set</code> containing all the objects stored in this value. Modifying the returned list will cause an
+     * exception.
+     */
+    @Override
+    public Set<Value> getValue() {
+        return getSet() == null? null : Collections.unmodifiableSet(getSet());
+    }
+
+    @Override
+    public ValueSet addValue(Value value) {
+        sameTypesOrThrow(value, Operation.ADD);
+        if(isNull() || value.isNull())
+            return new ValueSet(null, ((TypeCollection)getType()).getElementType());
+        Set<Value> result = new HashSet<Value>(getValue());
+        result.addAll(((ValueSet)value).getValue());
+        return new ValueSet(result, ((TypeCollection)getType()).getElementType());
+    }
+
+    @Override
+    public ValueInt valueSize() {
+        return new ValueInt((getSet() == null? null : (long)getSet().size()));
+    }
+
+    @Override
+    public void setValue(Set<Value> set) {
+        if(set == null)
+            super.setValue(null);
+        else {
+            super.setValue(new HashSet<Value>());
+            for(Value e : set)
+                add(e);
+        }
+    }
+
+    private Set<Value> getSet() {
+        return super.getValue();
+    }
+
+    private void checkElement(Value element) {
+        if(element == null)
+            throw new IllegalArgumentException("If you want to use null, create an object containing null instead.");
+        if(!type.getElementType().isCompatible(element.getType()))
+            throw new IllegalArgumentException("This set contains elements of type " + type.getElementType().toString()
+                    + " only. Incompatible with elements of type: " + element.getType().toString());
+    }
+
+    @Override
+    public boolean add(Value e) {
+        checkElement(e);
+        return getSet().add(e);
+    }
+
+    @Override
+    public boolean addAll(Collection<? extends Value> c) {
+        for(Value e : c)
+            checkElement(e);
+        return getSet().addAll(c);
+    }
+
+    @Override
+    public void clear() {
+        getSet().clear();
+    }
+
+    @Override
+    public boolean contains(Object o) {
+        return getSet().contains(o);
+    }
+
+    @Override
+    public boolean containsAll(Collection<?> c) {
+        return getSet().containsAll(c);
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return getSet().isEmpty();
+    }
+
+    @Override
+    public Iterator<Value> iterator() {
+        return getSet().iterator();
+    }
+
+    @Override
+    public boolean remove(Object o) {
+        return getSet().remove(o);
+    }
+
+    @Override
+    public boolean removeAll(Collection<?> c) {
+        return getSet().removeAll(c);
+    }
+
+    @Override
+    public boolean retainAll(Collection<?> c) {
+        return getSet().retainAll(c);
+    }
+
+    @Override
+    public int size() {
+        return getSet().size();
+    }
+
+    @Override
+    public Object[] toArray() {
+        return getSet().toArray();
+    }
+
+    @Override
+    public <U> U[] toArray(U[] a) {
+        return getSet().toArray(a);
+    }
+
+    @Override
+    public Value convertTo(Type type) {
+        switch(type.getPrimaryType()) {
+            case SET:
+                if(getType().isCompatible(type))
+                    return this;
+                throw new UnsupportedConversionException(getType(), type);
+            case LIST:
+                if(this.type.getElementType().isCompatible(((TypeCollection)type).getElementType())) {
+                    if(this.isNull())
+                        return new ValueList(null, this.type.getElementType());
+                    List<Value> list = new ArrayList<Value>();
+                    list.addAll(this);
+                    return new ValueList(list, this.type.getElementType());
+                }
+                throw new UnsupportedConversionException(getType(), type);
+            case STRING:
+                if(getValue() == null)
+                    return ValueString.NULL_STRING;
+                StringBuilder sb = new StringBuilder();
+                sb.append("{");
+                boolean notFirst = false;
+                for(Value v : getValue()) {
+                    if(notFirst) {
+                        sb.append(", ");
+                    } else
+                        notFirst = true;
+                    sb.append(v.toString());
+                }
+                sb.append("}");
+                return new ValueString(sb.toString());
+            default:
+                throw new UnsupportedConversionException(getType(), type);
+        }
+    }
+}