pl.softech.eav.domain.value.ObjectValue.java Source code

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Here is the source code for pl.softech.eav.domain.value.ObjectValue.java

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/*
 * Copyright 2013 Sawomir led <slawomir.sledz@sof-tech.pl>.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package pl.softech.eav.domain.value;

import static com.google.common.base.Preconditions.checkNotNull;

import javax.persistence.AssociationOverride;
import javax.persistence.AttributeOverride;
import javax.persistence.Column;
import javax.persistence.Embedded;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;

import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;

import pl.softech.eav.domain.AbstractEntity;
import pl.softech.eav.domain.attribute.Attribute;
import pl.softech.eav.domain.object.MyObject;

/**
 * @author Sawomir led <slawomir.sledz@sof-tech.pl>
 * @since 1.0
 */
@Entity(name = "pl.softech.eav.domain.value.ObjectValue")
@Table(name = "eav_object_value")
public class ObjectValue extends AbstractEntity {

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "attribute_id", nullable = false)
    private Attribute attribute;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "object_id", nullable = false)
    private MyObject object;

    @Embedded
    @AttributeOverride(name = "value", column = @Column(name = "string_value"))
    private StringValue stringValue;

    @Embedded
    @AttributeOverride(name = "value", column = @Column(name = "integer_value"))
    private IntegerValue integerValue;

    @Embedded
    @AttributeOverride(name = "value", column = @Column(name = "double_value"))
    private DoubleValue doubleValue;

    @Embedded
    @AttributeOverride(name = "value", column = @Column(name = "date_value"))
    private DateValue dateValue;

    @Embedded
    @AttributeOverride(name = "value", column = @Column(name = "boolean_value"))
    private BooleanValue booleanValue;

    @Embedded
    @AssociationOverride(name = "value", joinColumns = @JoinColumn(name = "dictionary_entry_id"))
    private DictionaryEntryValue dictionaryEntryValue;

    protected ObjectValue() {
    }

    private ObjectValue(Attribute attribute, MyObject object) {
        this.attribute = checkNotNull(attribute, ARG_NOT_NULL_CHECK, "attribute");
        this.object = checkNotNull(object, ARG_NOT_NULL_CHECK, "object");
    }

    public ObjectValue(Attribute attribute, MyObject object, StringValue stringValue) {
        this(attribute, object);
        this.stringValue = checkNotNull(stringValue, ARG_NOT_NULL_CHECK, "stringValue");
    }

    public ObjectValue(Attribute attribute, MyObject object, IntegerValue integerValue) {
        this(attribute, object);
        this.integerValue = checkNotNull(integerValue, ARG_NOT_NULL_CHECK, "integerValue");
    }

    public ObjectValue(Attribute attribute, MyObject object, DoubleValue doubleValue) {
        this(attribute, object);
        this.doubleValue = checkNotNull(doubleValue, ARG_NOT_NULL_CHECK, "doubleValue");
    }

    public ObjectValue(Attribute attribute, MyObject object, DateValue dateValue) {
        this(attribute, object);
        this.dateValue = checkNotNull(dateValue, ARG_NOT_NULL_CHECK, "dateValue");
    }

    public ObjectValue(Attribute attribute, MyObject object, BooleanValue booleanValue) {
        this(attribute, object);
        this.booleanValue = checkNotNull(booleanValue, ARG_NOT_NULL_CHECK, "booleanValue");
    }

    public ObjectValue(Attribute attribute, MyObject object, DictionaryEntryValue dictionaryEntryValue) {
        this(attribute, object);
        this.dictionaryEntryValue = checkNotNull(dictionaryEntryValue, ARG_NOT_NULL_CHECK, "dictionaryEntryValue");
    }

    private AbstractValue<?>[] getAllFields() {
        return new AbstractValue<?>[] { stringValue, integerValue, doubleValue, dateValue, booleanValue,
                dictionaryEntryValue };
    }

    public Attribute getAttribute() {
        return attribute;
    }

    public void accept(ValueVisitor visitor) {

        for (AbstractValue<?> value : getAllFields()) {

            if (value != null) {
                value.accept(visitor);
            }

        }

    }

    public String getValueAsString() {

        final String[] bag = new String[1];

        ValueVisitor visitor = new ValueVisitorAdapter() {
            @Override
            protected void visitAny(AbstractValue<?> value) {
                bag[0] = value.asString();
            }
        };

        accept(visitor);

        return bag[0];

    }

    @Override
    public String toString() {
        ToStringBuilder sb = new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE);
        sb.appendSuper(super.toString());
        sb.append("attribute", attribute);
        sb.append("value", getValueAsString());
        return sb.toString();
    }

}