001: package com.quadcap.sql.types;
002:
003: /* Copyright 1999 - 2003 Quadcap Software. All rights reserved.
004: *
005: * This software is distributed under the Quadcap Free Software License.
006: * This software may be used or modified for any purpose, personal or
007: * commercial. Open Source redistributions are permitted. Commercial
008: * redistribution of larger works derived from, or works which bundle
009: * this software requires a "Commercial Redistribution License"; see
010: * http://www.quadcap.com/purchase.
011: *
012: * Redistributions qualify as "Open Source" under one of the following terms:
013: *
014: * Redistributions are made at no charge beyond the reasonable cost of
015: * materials and delivery.
016: *
017: * Redistributions are accompanied by a copy of the Source Code or by an
018: * irrevocable offer to provide a copy of the Source Code for up to three
019: * years at the cost of materials and delivery. Such redistributions
020: * must allow further use, modification, and redistribution of the Source
021: * Code under substantially the same terms as this license.
022: *
023: * Redistributions of source code must retain the copyright notices as they
024: * appear in each source code file, these license terms, and the
025: * disclaimer/limitation of liability set forth as paragraph 6 below.
026: *
027: * Redistributions in binary form must reproduce this Copyright Notice,
028: * these license terms, and the disclaimer/limitation of liability set
029: * forth as paragraph 6 below, in the documentation and/or other materials
030: * provided with the distribution.
031: *
032: * The Software is provided on an "AS IS" basis. No warranty is
033: * provided that the Software is free of defects, or fit for a
034: * particular purpose.
035: *
036: * Limitation of Liability. Quadcap Software shall not be liable
037: * for any damages suffered by the Licensee or any third party resulting
038: * from use of the Software.
039: */
040:
041: import java.io.Externalizable;
042: import java.io.IOException;
043: import java.io.ObjectInput;
044: import java.io.ObjectOutput;
045:
046: import java.sql.ResultSet;
047: import java.sql.SQLException;
048: import java.sql.Types;
049:
050: import com.quadcap.util.Debug;
051:
052: /**
053: * The SQL <b>BLOB</b> type.
054: *
055: * @author Stan Bailes
056: */
057: public class TypeBlob implements Type, Externalizable {
058: public static final TypeBlob typeBlob = new TypeBlob();
059: int max = -1;
060:
061: public TypeBlob() {
062: }
063:
064: public TypeBlob(int max) {
065: this .max = max;
066: }
067:
068: public String getTypeName() {
069: return "BLOB";
070: }
071:
072: public int getMax() {
073: return max;
074: }
075:
076: public int getJDBCType() {
077: //- //#ifdef JDK11
078: //- return Type.BLOB;
079: //#else
080: return Types.BLOB;
081: //#endif
082: }
083:
084: public String getJDBCClassName() {
085: return "java.io.InputStream";
086: }
087:
088: public int getPrecision() {
089: return max;
090: }
091:
092: public int getScale() {
093: return 0;
094: }
095:
096: public int getMaxPrecision() {
097: return -1;
098: }
099:
100: public int getMinScale() {
101: return -1;
102: }
103:
104: public int getMaxScale() {
105: return -1;
106: }
107:
108: public boolean isCharType() {
109: return false;
110: }
111:
112: public boolean isCaseSensitive() {
113: return false;
114: }
115:
116: public boolean isCurrency() {
117: return false;
118: }
119:
120: public boolean isSigned() {
121: return false;
122: }
123:
124: public int getDisplayWidth() {
125: return (max + 3) / 4;
126: }
127:
128: public String toString() {
129: StringBuffer sb = new StringBuffer();
130: sb.append("BLOB");
131: if (max > 0) {
132: sb.append('(');
133: sb.append(Integer.toString(max));
134: sb.append(')');
135: }
136: return sb.toString();
137: }
138:
139: /**
140: * We don't bother serializing the data, since Java serialization is
141: * only used for the type portion of a table column.
142: */
143: public void readExternal(ObjectInput in) throws IOException {
144: max = in.readInt();
145: }
146:
147: public void writeExternal(ObjectOutput out) throws IOException {
148: out.writeInt(max);
149: }
150:
151: public Value convert(Value v) throws ValueException {
152: return v.convert(this );
153: }
154:
155: public String getCreateParams() {
156: return "length";
157: }
158: }
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