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- /*
- Copyright (c) 2011 James Ahlborn
-
- 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 com.healthmarketscience.jackcess.impl.complex;
-
- import java.io.IOException;
- import java.util.Date;
- import java.util.List;
- import java.util.Map;
-
- import com.healthmarketscience.jackcess.Column;
- import com.healthmarketscience.jackcess.Row;
- import com.healthmarketscience.jackcess.complex.Attachment;
- import com.healthmarketscience.jackcess.complex.AttachmentColumnInfo;
- import com.healthmarketscience.jackcess.complex.ComplexColumnInfo;
- import com.healthmarketscience.jackcess.complex.ComplexDataType;
- import com.healthmarketscience.jackcess.complex.ComplexValue;
- import com.healthmarketscience.jackcess.complex.ComplexValueForeignKey;
- import com.healthmarketscience.jackcess.complex.MultiValueColumnInfo;
- import com.healthmarketscience.jackcess.complex.SingleValue;
- import com.healthmarketscience.jackcess.complex.UnsupportedColumnInfo;
- import com.healthmarketscience.jackcess.complex.UnsupportedValue;
- import com.healthmarketscience.jackcess.complex.Version;
- import com.healthmarketscience.jackcess.complex.VersionHistoryColumnInfo;
-
- /**
- * Value which is returned for a complex column. This value corresponds to a
- * foreign key in a secondary table which contains the actual complex data for
- * this row (which could be 0 or more complex values for a given row). This
- * class contains various convenience methods for interacting with the actual
- * complex values.
- * <p>
- * This class will cache the associated complex values returned from one of
- * the lookup methods. The various modification methods will clear this cache
- * automatically. The {@link #reset} method may be called manually to clear
- * this internal cache.
- *
- * @author James Ahlborn
- */
- public class ComplexValueForeignKeyImpl extends ComplexValueForeignKey
- {
- private static final long serialVersionUID = 20110805L;
-
- private transient final Column _column;
- private final int _value;
- private transient List<? extends ComplexValue> _values;
-
- public ComplexValueForeignKeyImpl(Column column, int value) {
- _column = column;
- _value = value;
- }
-
- @Override
- public int get() {
- return _value;
- }
-
- @Override
- public Column getColumn() {
- return _column;
- }
-
- @Override
- public ComplexDataType getComplexType() {
- return getComplexInfo().getType();
- }
-
- protected ComplexColumnInfo<? extends ComplexValue> getComplexInfo() {
- return _column.getComplexInfo();
- }
-
- protected VersionHistoryColumnInfo getVersionInfo() {
- return (VersionHistoryColumnInfo)getComplexInfo();
- }
-
- protected AttachmentColumnInfo getAttachmentInfo() {
- return (AttachmentColumnInfo)getComplexInfo();
- }
-
- protected MultiValueColumnInfo getMultiValueInfo() {
- return (MultiValueColumnInfo)getComplexInfo();
- }
-
- protected UnsupportedColumnInfo getUnsupportedInfo() {
- return (UnsupportedColumnInfo)getComplexInfo();
- }
-
- @Override
- public int countValues() throws IOException {
- return getComplexInfo().countValues(get());
- }
-
- public List<Row> getRawValues() throws IOException {
- return getComplexInfo().getRawValues(get());
- }
-
- @Override
- public List<? extends ComplexValue> getValues() throws IOException {
- if(_values == null) {
- _values = getComplexInfo().getValues(this);
- }
- return _values;
- }
-
- @Override
- @SuppressWarnings("unchecked")
- public List<Version> getVersions() throws IOException {
- if(getComplexType() != ComplexDataType.VERSION_HISTORY) {
- throw new UnsupportedOperationException();
- }
- return (List<Version>)getValues();
- }
-
- @Override
- @SuppressWarnings("unchecked")
- public List<Attachment> getAttachments() throws IOException {
- if(getComplexType() != ComplexDataType.ATTACHMENT) {
- throw new UnsupportedOperationException();
- }
- return (List<Attachment>)getValues();
- }
-
- @Override
- @SuppressWarnings("unchecked")
- public List<SingleValue> getMultiValues() throws IOException {
- if(getComplexType() != ComplexDataType.MULTI_VALUE) {
- throw new UnsupportedOperationException();
- }
- return (List<SingleValue>)getValues();
- }
-
- @Override
- @SuppressWarnings("unchecked")
- public List<UnsupportedValue> getUnsupportedValues() throws IOException {
- if(getComplexType() != ComplexDataType.UNSUPPORTED) {
- throw new UnsupportedOperationException();
- }
- return (List<UnsupportedValue>)getValues();
- }
-
- @Override
- public void reset() {
- // discard any cached values
- _values = null;
- }
-
- @Override
- public Version addVersion(String value) throws IOException {
- return addVersion(value, new Date());
- }
-
- @Override
- public Version addVersion(String value, Date modifiedDate) throws IOException {
- reset();
- Version v = VersionHistoryColumnInfoImpl.newVersion(this, value, modifiedDate);
- getVersionInfo().addValue(v);
- return v;
- }
-
- @Override
- public Attachment addAttachment(byte[] data) throws IOException {
- return addAttachment(null, null, null, data, null, null);
- }
-
- @Override
- public Attachment addAttachment(
- String url, String name, String type, byte[] data,
- Date timeStamp, Integer flags)
- throws IOException
- {
- reset();
- Attachment a = AttachmentColumnInfoImpl.newAttachment(
- this, url, name, type, data, timeStamp, flags);
- getAttachmentInfo().addValue(a);
- return a;
- }
-
- @Override
- public Attachment addEncodedAttachment(byte[] encodedData)
- throws IOException
- {
- return addEncodedAttachment(null, null, null, encodedData, null, null);
- }
-
- @Override
- public Attachment addEncodedAttachment(
- String url, String name, String type, byte[] encodedData,
- Date timeStamp, Integer flags)
- throws IOException
- {
- reset();
- Attachment a = AttachmentColumnInfoImpl.newEncodedAttachment(
- this, url, name, type, encodedData, timeStamp, flags);
- getAttachmentInfo().addValue(a);
- return a;
- }
-
- @Override
- public Attachment updateAttachment(Attachment attachment) throws IOException {
- reset();
- getAttachmentInfo().updateValue(attachment);
- return attachment;
- }
-
- @Override
- public Attachment deleteAttachment(Attachment attachment) throws IOException {
- reset();
- getAttachmentInfo().deleteValue(attachment);
- return attachment;
- }
-
- @Override
- public SingleValue addMultiValue(Object value) throws IOException {
- reset();
- SingleValue v = MultiValueColumnInfoImpl.newSingleValue(this, value);
- getMultiValueInfo().addValue(v);
- return v;
- }
-
- @Override
- public SingleValue updateMultiValue(SingleValue value) throws IOException {
- reset();
- getMultiValueInfo().updateValue(value);
- return value;
- }
-
- @Override
- public SingleValue deleteMultiValue(SingleValue value) throws IOException {
- reset();
- getMultiValueInfo().deleteValue(value);
- return value;
- }
-
- @Override
- public UnsupportedValue addUnsupportedValue(Map<String,?> values)
- throws IOException
- {
- reset();
- UnsupportedValue v = UnsupportedColumnInfoImpl.newValue(this, values);
- getUnsupportedInfo().addValue(v);
- return v;
- }
-
- @Override
- public UnsupportedValue updateUnsupportedValue(UnsupportedValue value)
- throws IOException
- {
- reset();
- getUnsupportedInfo().updateValue(value);
- return value;
- }
-
- @Override
- public UnsupportedValue deleteUnsupportedValue(UnsupportedValue value)
- throws IOException
- {
- reset();
- getUnsupportedInfo().deleteValue(value);
- return value;
- }
-
- @Override
- public void deleteAllValues() throws IOException {
- reset();
- getComplexInfo().deleteAllValues(this);
- }
-
- @Override
- public boolean equals(Object o) {
- return(super.equals(o) &&
- (_column == ((ComplexValueForeignKeyImpl)o)._column));
- }
- }
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